Is it possible that some of the new/prospective members feeling “unwelcome” on MN haven’t fully/fairly explored the site?
I think most “regulars” know that some boards (AIBU is frequently cited) are more rough-and-tumble than others. We also know that some boards are general: on Chat or AIBU or 30/90 Days Only, almost any topic goes. Many other boards - like Scotsnet or LGBT Parents or Baby Names or What We’re Reading or Vegan - are intentionally topical and it’s basic etiquette to try to post on the relevant board and keep roughly on topic. Members who feel their group or interest or need isn’t represented via a specific board and don’t want to post on a general board can do the legwork to demonstrate broad user interest and ask MNHQ to add a board - as PatricksRum ably demonstrated with the recent addition of Black Mumsnetters.
If new posters are coming to MN already determined to participate in one specific, topical board - in this case, Feminism Chat - and then they’re going offsite and condemning MN because off-topic posts and replies are/were not welcomed on that topical board -- that situation is categorically different from a particular poster or a particular demographic being or feeling unwelcome on the site as a whole or on that particular board.
An ardent carnivore (for example) can happily post about meat all day on the Food/Recipes board or on the more general boards, but will reasonably get short shrift if they post repeatedly on Vegan re beef, chicken, prawns, etc. This is not excluding a poster or group, it’s excluding irrelevant content on a topical board. No one cares if a rampant carnivore goes on Vegan to ask for help deciding what type of tofu to try or what to cook for a vegan guest - people do that periodically and are welcome(d). But no sensible person would come to MN intending to read (and willing to read) ONLY the Vegan board, and then go offsite to complain that MN is unwelcoming to carnivores. And I would expect MN to support the regular users of Vegan if this practice became contentious or interfered with the intended use of the board - even if the new user(s) genuinely believed that those foodstuffs should be centred on Vegan.
The same concept applies to the Feminism Chat board. I understand that "feminism" can be confusing, and has many strains, and usually a robust debate going on among them. But feminism does have a clear definition: it is the theory and practice to improve the lot of all women, of women as a group. I see more and more posts and replies on Feminism Chat that seem to think that feminism means anything that involves one or more women in any way. This is incorrect.
Recently there was a long thread about differentiating sexual orientation from sexuality, and one poster kept pressing women to respond to a clearly male-centred idea of sexuality, ignoring women who described a different take. The thread then devolved into what men like/appreciate/find sexy about women. A regular poster pointed out the problem, and another new poster came in and said it's natural to ask what men are feeling about women. I would absolutely expect to see something like that on many other MN boards and have no problem with it there - of course there are heterosexual or bisexual single (or just curious) women here who may sometimes want to chat about what men find attractive about women, and probably men too who’d be happy to have that conversation. But it does not belong on a board about feminism. Feminism is clear that women are subjects, not objects.
If potential new MN users are asking to feel completely welcome engaging with the posters and material on Feminism Chat specifically, but they do not want to post about feminist topics/women’s rights and habitually reply to threads on that board with off-topic comments, then I’m not sure that their expectations can be met without fundamentally changing the nature and purpose of the existing board.
A possible compromise solution might be to set up a new board dedicated to discussions on Trans rights - or even something like the now-defunct niche Reddit board “GC debates QT” (not crazy about the name, but you get the idea) to explicitly discuss various conflicts between gender ideology and feminism and between women’s existing rights and certain strains of trans rights activism, policy, legislation, etc. That way, the discussions about feminist topics and women’s rights could retain their integrity on Feminism Chat AND members with other perspectives and experiences could engage with that group of posters and could also be fairly and prominently represented too.
Either way - while an individual thread asking questions about or critiquing a particular feminist view, talking point, article, book, etc. is appropriate and welcome in Feminism Chat, constant raising of issues and views that have nothing to do with feminism gets just as tiresome for Feminism Chat regulars as constant random references to trout and truffles and turkey - or indeed, to toboggans and trespassing and Trudeau - would for denizens of Vegan.
If MN wants to change the definition of Feminism Chat so that it's no longer about feminism - I would be unhappy, because I think you're all done a wonderful job holding the line for women in a hostile environment. But it is your (MN's) choice. I just ask that you tell us clearly when and if there is no longer a space for feminism on MN, and perhaps change the name of the board so that new users are not misled. Either way, I thank you for giving us the time to really understand the need for, and to create, portable feminist spaces online.