Indeed so. But life is short. So, I think we have to have some norms around respect, and respectful disagreement, and the difference between discussion and argument, and recognition of well-known endless arguments which need not be reignited.
The paradox of tolerance is relevant here too (“in order to maintain a tolerant society, the society must retain the right to be intolerant of intolerance”.) That’s related to the fact that some people may not be acting in good faith: they may be troublemakers, who wish to damage the community.