Since the deleted posts aren't there and I haven't seen them it's a bit hard to know whether I'd agree with you or not. Maybe I would.

That rant from V~ "........ or whoever had a certain style about it which I think tended to counterbalance the venom. I wouldn't see it as necessary to cut it out. I have seen posts which did deserve to get deleted - carping repetitive stuff, often racist or sectarian. None that I recall from you, Jim (if they'd already been deleted I wouldn't have, would I? Which doesn't imply that I see that to be your way of posting.)

Selectively deleting posts on a party political basis is of course unjustifiable (leaving aside the odd Nazi and suchlike, perhaps). Apart from everything else, selectivity isn't that straightforward. In fact, if I were in the business of selectively deleting posts on a political basis myself, it'd be the ones from "my side" that stepped over the line that I'd want to get rid of. I'd be tempted to leave in place the counterproductive nasty ones from "the other side".