Reposting with some added context in editorial brackets:
All of you [PP on the FWR thread] who described it as bullying and manipulative are on the nail. I struggle with the language surrounding social interactions [FWR regulars know that this is because I am autistic], so all I could identify was "this feels bad" and take a stab as to a possible underlying motive.
I am reminded of "if you're not with us, you're against us", which is always a threat. I am also reminded of the perennial virtue-signalling student union motions to condemn <thing>, where <thing> is usually the fault of a foreign govt who doesn't even know that Smalltown Former Poly even exists, never mind pays attention to what its SU committee thinks. The SU motions about Palestine/conflict minerals/gay rights in Russia/etc are not only pointless, they distract from the task of representing and supporting the students. I'm lastly reminded of Catch-22's Great Loyalty Oath Crusade.
"When they voiced objection, Captain Black replied that people who were loyal would not mind signing all the loyalty oaths they had to. To anyone who questioned the effectiveness of the loyalty oaths, he replied that people who really did owe allegiance to their country would be proud to pledge it as often as he forced them to."
It feels like there's a subtext of "if you don't cosign this, you must want to hurt babies", when that's not the case because there are plenty of other reasons not to cosign it.
One of those reasons being "why is anyone trusting or supporting Oxfam after sex-for-aid?" Another being "we don't know the full story based on this letter alone". A PP explained about Israel wanting to vet aid workers and the charities in question not cooperating, which is strangely not mentioned in the letter.
The First Rule of Misogyny is "women are responsible for what men do". Justine and the women of Mumsnet are not responsible for what the man in charge of Israel does, and it's misogyny to claim that we are or should try to be, especially when he is ignoring everyone else.
I don't just post on FWR. I spend a lot of time on Relationships as well, usually telling women to LTB. It took me a while to realise that the reason why this letter "feels bad" is that it's an attempt at coercive control by setting expectations amongst the public to manufacture Justine's consent, just like when an abuser sets expectations in the kids that he knows his victim might not want or be able to keep (e.g. saying "Maybe Mum will get you a tablet for Xmas" to an eight year old). I didn't recognise it immediately because it's outside of a family context and was carried out by women.