The use of titles carries very different implications in different cultures. America is diverse. First name can signify disrespect or familiarity. Titles can signify high status, or stuffy pretentiousness. "Dr" can be reserved for medical doctors, can extend to PhDs, or even extend to JDs.
I spent 15 minutes, the other day, on an inane debate with a colleague, before we realized we were using a word with subtly different meanings.
There's a new form of strawman attack, where you point to a crazy on the internet with some opinion, and stereotype everyone to have that same opinion, and the linked article is clearly from someone with issues. But the fact remains tht there are cultural pockets of culture where all the terms are appropriate and don't convey disrespect, whether "Jill," "First Lady," "Dr. Biden," "Mrs. Biden," "Madame President," or even "Hey you." Conversely, there are cultural pockets where all of those convey disrespect.
If you're aware of it, and look for it, it's not hard to tell which is which, even.
In a multicultural society, we should try to hear what the other person is trying to say, assume good intentions, and not pick battles over semantics. Your words and body language mean something different than mine, and that's okay. We should try to communicate. Disrespect isn't about a title, but what's behind it.