We live in a patriarchal society where the dominant ideology is patriarchal. Not ALL patriarchal views benefit men. They produce stereotypes and gendered expectations which can be limiting to men as well as limiting the agency of women.
However, within a patriarchal society the news, media, politics, family structure etc will predominantly follow that ideology.
So - we get the male pov from TV, news, radio, family time, school etc etc etc. It just goes on and on and it is almost inescapable. the ONLY potential for NOT hearing the patriarchal line is by creating a 'safe space' which is ring-fenced and attempts to block out patriarchy. One way of doing this is for female-only spaces. Yet, as women who have grown up within patriarchy we are unable to truly separate out our minds from that ideology. So, even a female only space will have elements of patriarchy in it.
Given that having a truly non-patriarchal discussion is close to impossible, any male who comes into that space, no matter how respectfully, is once again imposing the dominant ideology and subverting the attempt at having a non-patriarchal discussion. It isn't about interrupting, or announcing oneself. It's about an attempt to genuinely think beyond our known and experienced lives to create - even if only temporarily within our minds - a space that has NO patriarchal influence at all.
It's about freedom of thought. The very presence of a male can limit that.
Judith Butler had a lot to say about how fiction can be used as a place for thought experiment to create a non-patriarchal fictional space. From that situation, it could then be possible to find ways out of a patriarchal society and build greater equity. That's why saying 'as a man' is more than a bit pants.
On a thread about 'what are you having for dinner' it doesn't really matter who is speaking. On a thread about why men being present is a problem, then men being present is a problem.