To be fair, there's pretty much just one guy. Howard's gone. Oak's a troll. Lurker's left wing but I haven't seen him engage much on vax stuff. That just leaves Prime.
Imo he's married to his ideology for a few reasons. He's bisexual and he has coped all kinds of flack from right wingers about it on here, and probably irl all his life so he's understandably resistant to allying with them on anything. I'm a liberty guy, so I don't really care how anyone likes to get it on.
Secondly, he seems like a socialist. He lives in a blue area. His income was from a school, so that's tax money. He probably gets social security income, probably a pension, all government programs. He's participated in, and benefitted from, a system of central authority, and he's done pretty well out of it. I get the impression he has a difficult time wrapping his head around objections to authority since he considers the authority to be benevolent, honest, and wise. Talk to a successful businessman and he'll probably tell you that capitalism is where it's at. Most people support the system which supports them and they don't want to delve into political philosophy. I prefer to plumb the moral grounds for opposing arguments but I can understand why others just want to believe in what works for them.
Third, he might be the oldest guy on the board. Old people are freaky about covid and imo they're right to be. It's the most at risk group. He's not the only boomer this has happened to. My dad has basically been hiding in his house for three years listening to NPR except for when he takes a walk in the woods and he puts his N95 on whenever he sees someone else in the woods. Honestly, it'll take NPR telling him it's ok to go to a restaurant before he'll go. A bunch of right wingers on a forum quoting age irrelevant statistics or saying it's not even a real virus wouldn't make a dent, just like you're not with Prime. And it had the unfortunate effect on Prime of making well intentioned information like vitamin d or ivermectin or a P3 respirator also get prejudicially rejected.
He seemed back and forth on mandates, as I recall, and I think I remember him pitching in with Howard on me about them. But I think he also said later that he wasn't in support of them. I can let that slide. If you're going to troll the guy until he's frothing at the mouth, I can't hold him as responsible for voicing an objectionable opinion as if he'd been cool and calm and made a case for fascism.
Anyway, that's why I think he's obstinate. You guys don't seem to have put thought into who he is and where he's coming from. It's not just that he's some dick who won't admit he's wrong. He is, and if I were in his shoes I'd want some goddamn explanations from the people who assured me and my family it was safe and effective, but I'm not going to hack on the guy about it. Everyone gets to make their choice and then get the result that physics brings. That's liberty.