I honestly couldn’t get very far because his points were not as clear-cut as he was trying to imply and the tone was confrontational. I have a hard time being told I’m wrong on a matter of personal preference that is individually configurable , and where my choices have no impact on others’ experience.

If he’s venting about his own experience, because the most common choices, which are defaults, don’t match his preferences, go right ahead. But don’t phrase it like anyone who disagrees with you can be demonstrated as objectively wrong with a few simple examples.