This is true regardless of one's personal political affiliation.
I know at least a few people who think (not without justification) that American political conservatives generally want them and everyone like them dead and/or in some state of second-class citizenship.
On the flipside, I know a handful of conservatives who believe fervently that left-leaning political policy is going to destroy their and their families' livelihoods, leaving their children without the future that they've worked hard to build.
I don't see how anyone could be comfortable in a knitting club alongside someone who they see as a literal existential threat.
The corollary is that it's not realistic to expect hobby knitters to solve a set of radioactively toxic political problems. Not even locally.
Would your hypothetical knitting club allow all patterns? That's a political position. If not, would it allow a pattern with the word "VEGAN" baked into it? Yes or no, that's a political position too.
There's no flow through that paragraph that doesn't end in making a political choice. You can't avoid politics, you can only pretend to.
Not everyone has the luxury of being able to carry out their lives regardless of what happens in politics.