All that matters is whether you’re speaking for or against the prevailing assumptions of the site/the subreddit. Most people on the internet are not experts on the topic but somehow already have their minds made up.
Also, Lemmy is not better than Reddit in this regard. Dominant opinion > everything else.
You're right, and it takes humility to admit that you're wrong and someone else is right. Personally, I will try to argue for my belief based on the reasons I'm holding it in the first place; but if I can see that I'm wrong and everything I'm googling is matching what the other person says, then I'd rather have beliefs that match reality than be right.