Essentially this. As long as someone authentically believes their opinion, whether it’s political, religious, or otherwise, and they’re either informed on it or, more importantly, willing and able to make an effort to learn more about it and be challenged on it, then I don’t particularly care what someone believes. And, to a certain extent, someone have the courage to support an unpopular belief or opinion and defend it isn’t just something I respect as much as another opinion, but I’d say it’s admirable.
That said, there are certain opinions and beliefs that just don’t pass this muster. For example, someone that is racist is very likely to be poorly informed, and likely unwilling to inform themselves, and, frankly, I’m not even sure it’s authentic, not in the sense that they don’t “think” it, but that they were raised that way and may not really believe it. And, frankly, I’ve never met a racist that was truly, honestly, willing to reconsider their position based on evidence and logic. Any controversy over racism is just noise from racists.
But to that extent, there are other opinions where misinformation is everywhere, like climate change, and so I think it’s possible that someone could make a reasonable effort, for someone who doesn’t really care about it I wouldn’t expect them to put in much in the first place, and still be very wrong about it. If they’re actually willing to engage in it and consider an opposing view, then I can still respect their opinion and hope I can change their mind. Hell, I even know some former deniers, whose opinions I’ve either changed, or at least gotten to make reasonable concessions that, for instance, wanton pollution and burning of fossil fuels isn’t without some serious environmental consequence.