Be interesting to see to what extent the 'trans v terfs' battle plays out - or doesn't - in these venues. I think it will also be interesting if/when the London event runs again how the organisers approach the issue. I get the impression over the years there have been a few exclusions - conspiraloons, weird sects on the pavement outside, but haven't table/room bookings been pretty much open to anyone who self defines as anarco-ish? Would organisers be forced to come up with statements limiting the groups who can book? Would there be pre-negotiations between groups to avoid similar battles?
None of that is put forward as a 'solution'. Quite the opposite in fact - I can't really see how any kind of 'planning' could stop these toxic battles happening again.
All very sad really, makes you appreciate the efforts the organisers have put in over the years.