I know a lot of radfems have been uncomfortable with Arty for a while, and his (admittedly) drunken comments on Twitter about radfems with bloodlust for AGP deaths were really out of line.
My own thoughts are: The Mess We're In is there to discuss gender ideology and its harms, and as the viewing audience gets bigger, the political spectrum will get wider, and so will everyone's discomfort of who they are holding the line with. The only group I have absolutely no tolerance for in these spaces are p*edophiles, or those with views that would incite hatred to physically harm others although the former group has done a better job to infiltrate TRA movement, which is why we're seeing inappropriate things involving minors such as 'drag children', to deliberately blur the boundaries of what's appropriate and what children have the capacity to understand.
I don't consider Graham, Arty or any men feminists, that's my view, it won't be changed. I don't agree with Arty's views on AGP, he and Graham overlook the harms and destruction it causes to women and families, and the gaslighting of women to accept their partner's AGP, but I've never gone to their videos with the view it's a 'safe space' or feminist discussion platform; they've done a lot to help to bring the concerns about gender ideology to the wider public and it's gaining momentum with more press coverage, the BBC out of Stonewall etc.
I know others would want Arty out of the group or to reassess his sympathy for AGPs, but demanding purity for people in their politics is impossible, and Graham wouldn't kick Arty off the podcast. I do think it runs better when another woman is there alongside Helen, such as Rosie Duffield, Maya, etc.