No pile-on from me, either.
I left the UCU earlier this year (a combination of stupid policies over strikes and their TRA madness). I think the "Four Fights" strategy is contradictory & incoherent, I didn't think striking was the most effective form of industrial action for academics, and I don't believe the strikes are achieving anything. So with those opinions, I felt I couldn't remain a UCU member.
But I'm still in solidarity of you all - I think that the rank & file membership have been sacrificed for a group of would-be revolutionaries, who are just middle-class Trots/Sparts. There is no criticism of ordinary UCU embers, and I don't resent what you've all been doing.
When I was an undergrad in the late 1970s/early 1980s, the feminist group I belonged to used to joke that all the Trotskyites and Spartacists on campus were trust fund revolutionaries, who'd all gone to fee-paying schools. Their major 'revolutionary' action was to fight between their factions, and neo-liberalism rolled on ....
I was once told by a Spart, who was ranting about how bad Solidarity was (Lech Walesa in Poland) and how Walesa was acting against the revolutionary workers' state. I see a similar kind of infantile stupidity in factions within the UCU executive.