i don't believe opinions hold the same value when it comes to matters of fact. Contrarians, conspiracy theorists, anti-vaxxers and flat-earthers all believe their opinions are valid, yet it's patently clear they're not. They refuse to countenance any other views, secure in some kind of bubble where beliefs can trump facts whenever they choose.
Quite frankly I find them thoroughly disrespectful of both science and reason. I think I'm well within my rights to not have to argue the toss with the wilfully ignorant. That doesn't make me a bad person. It doesn't even mean I'm terribly intolerant. It just means I'm not so open-minded my brains have fallen out.
Having said that, I guess it's important to decide what it is that is triggering your discomfort and how much it matters in the long run. I don't think it's possible to have a long-term relationship with somebody without running into different values or beliefs from time to time. If we always ran when that happened we'd all be clearing out our stable of partners and friends - and losing a lifetime of love in the process.
Perhaps it only matters when the toxicity from having to swallow your pride or hold your tongue ends up poisoning your heart or mind. When that happens, it might be time to go.