I've been a forum member since 2015 and in that time most of the stramashes have I think been around (1) Brexit, (2) diesels and by extension the electric vehicle debate; and (3) coronavirus and the govt's responses to it.
I do think that's really pretty inevitable, given that those particular topics do impinge directly on practical Cali'ing by, respectively: (1) potentially affecting continental travel and costs of imported vehicles etc; (2) the future of diesel Calis; and (3) whether we can go camping, and where, during the outbreak. Those aren't just tangential to a forum about campervanning, they are of the essence to the Cali lifestyle in many ways. But unfortunately they do inevitably all have political dimensions because every aspects of the regulation of the public sphere has a political dimension.
So I personally don't think there's a hope of banning politics (however you define that) from being mentioned, nor would I myself want to see it tried. But we should have some ground rules for how we talk about things when they do come up. Asking for basic good manners seems a good start but probably not enough.
I would say I think some forum members (possibly a minority, but a vocal one) find it almost impossible not to treat any criticism of the government of the day as an attack on their personal political or ideological affiliation. That's unfortunate, but will always be so. But when a thread takes such a turn the best way to chill things back down does seem to be to move it to Three Cocks, where the antagonists can continue to throw stones if they want and the rest of us can either visit the cockpit, or ignore it.
Beyond that, in my view any direct verbal assault on an individual forum member, using intemperate language or obvious innuendo, is un-putupwithable, even if it's a response to some perceived challenge to one's own political views or even an outright trolling. It's pretty clear when the 'reasonable forum member' would deem that to have occurred, and mods should have no hesitation in acting in that case in banning the offending member from the rest of that thread, and noting why they did so. Other forums use a moderator 'red card' system and that seems to work when necessary although it's not really a perfect system.
Having said all that, this forum is in most respects one of the friendliest and most balanced that I know of. If anyone doubts that, have a look at some other car-related forums, which can be complete pits of vipers.