For example, one needs not be an instinctive pro-Russia tankie playing mind games to somehow support Trump,

I hope you mean 'or somehow support Trump'.

to state that voting for somebody activelly supporting an etnic genocide being commited by the supporters of a quasi-Nazi ideology would be too much for anybody with Humanist principles: absolutelly normal general Humanist Principles such as “though shall not kill innocents such as children” (which aren’t at exclusive of the Left) explain that posture of not voting for any candidate.

And I call that position out for what it is. Tacit support for fascism.

I'm opposed to the Palestinian genocide. It's not like I don't get that. If it were up to me, Israel wouldn't get one red cent from any democratic nation.

But opting for the greater evil doesn't save anyone. Contributing to a Trump victory - and yes, choosing inaction is an action - will endanger many millions more without even the hope of changing what is supposedly being protested against - indeed, actually making it worse.

And, you know, me and mine? We're not at the top of the target list, but we're definitely not at the bottom either. So I'd like to not end up marching into an extermination camp because someone wanted to feel 'principled' when they refused to vote for the lesser evil who will continue democracy and not initiate any new genocides. It's deeply frustrating to me when people who claim to care about minorities won't do the least damn thing, a check in a box, to use their very real power as citizens to help avert a very serious situation. What else is that to be seen as, other than passive support for sending me and my family into the death camps?

I mean, I'm honestly not that attached to my own life. But my family I love. Some of them, at least. And I would very much like it if other minorities in the US weren't genocided either. If that's not a reason to get fucking furious at people doing nothing when they could be doing something at minimal fucking cost to them, I don't know what is.

Fuck, you want to overthrow the system? I'm not stopping you. But if you aren't doing it in the next six months, check the fucking box for those of us who have to live through this shite.

I mean, I’ve seen posts of yours that I totally agree with (because they align with my Principles), but in anything which is to do with Political Factions, in my view you totally abandon principled thinking and just go full on tribalist often passing the impression that you have the very same kind of “everybody has a tribe” expectation as the Far-Right muppets.

I mean, everyone does have a tribe, but that tribe isn't always relevant to political discussion. Most of the time when I'm bitching, it's about people whose principles should nominally align against a certain action or particularly vile faction, but align with it instead for some godforsaken reason (usually, a mixture of 'They oppose Tribe I Hate so they must be good' and 'The other members of My Tribe say this and I want to reinforce their positions').

My impression here in Lemmy is that there are a lot more Lefties By Principle than Members Of Self-Proclaimed Leftwing Tribes, though there are certainly a lot more of the latter than in the average English-speaking social media.

I think you put too much emphasis on the label and not the tribe. People in Lemmy are as tribal as any other - the difference is that their 'tribe' has more to do with their social circles than their self-applied political labels.