It's so unfortunate that what was otherwise the best Monty Python movie had its entire B-plot hinge on thinly veiled whining about how the left won't unite with the liberals to stop the Tories. At the most generous interpretation it's mocking rabid sectarians whose ideological beliefs are so unformed that they can't even refute the dumbest and most invalid counter-arguments because they're just in it for the aesthetics (like John Cleese's character in that bit is just a vapid careerist whose grandest goals are just performative, low-impact adventurism akin to the hijinks of XR but with less mass appeal, done exclusively by other people), and I'll grant that at least part of the intent was there going off what the writers said, but I can't help but feel it's one of those bits that ends up doing nothing but reinforcing a reactionary worldview when viewed by anyone who doesn't know the exact type of guy it's making fun of.