Taking issue with this use of "problematic" says a lot about the speaker too.

"Problematic" is just vague. It's not that much more writing to specify the actual problems.

It's a rhetorical device that dates back to the ancient Greeks (meiosis). It's absolutely a lot more writing to enumerate the ways in which Elon Musk is problematic.

In a sane world it would read that way. Unfortunately, we live in a world where such nondescript descriptors (“problematic”, “objectionable”, “unprofessional”, “toxic”, “extremist”, “far-$SIDE”, a few others depending on usage) have been used, and overused, to accuse or smear people without taking on much of a burden of proof or making any statements specific enough to be falsifiable.

They now provoke instinctive revulsion when used in culture-war-adjacent contexts even when, as here, their usage is entirely legitimate (you presuppose a vague but mutually understood allegation rather than nebulously introducing a fresh one). I think only “controversial” has escaped this fate, but it might be too weak for your purposes.

(To be clear, I am only trying to explain why your phrasing might cause your interlocutor to momentarily recoil even when—as in my case—they don’t actually have any problem with the contents of your statement. What you do with this explanation is up to you: I don’t believe these terms are short-term salvageable at this point, but neither will I begrudge others their choice of hopeless cause; I certainly have my own fair share of those.)

I think you can forgive it as a rhetorical device when speaking to a really broad audience.

IMO it's best to use fewer thought-terminating cliches in that case, not more. Unless one is simply engaging in a Reddit-style call-and-response exercise.

To me, Musk crossed from "maverick" to "problematic" around 2018, when he tried to insert himself into the Thai cave rescue operation and ended up slinging accusations of pedophilia on Twitter.

At this point, he has unlocked many more specific adjectival achievements, and those are the ones that should be invoked whenever Musk's behavior is the topic. (Which it isn't here.)

Just because you've been programmed to associate "problematic" with "liberals" and then further trained to think that people who use the word "problematic" are in fact problems, that's on you, the larger zeitgeist you don't see, and the people programming you.

I feel like taking issue with a word, even when used in a perfectly valid situation, is something worth reflection. Like fair enough if you've heard problematic used in ways you disagree with before, but maybe respond to those comments, not one where you agree with its use. Unless you actually do mean to defend Musk and don't think lying to investors, calling people pedos for saving kids, delaying public infrastructure, doing Nazi salutes, etc. etc. is problematic.

It seems to me to be saying that the person finds Elon Musk’s behavior problematic. What else are you reading into it?

He was always a nutcase. So unhinged he got booted out of PayPal. Then the shenanigans and retconing of him as a Tesla founder. His unrealistic promises he never realised over the years at Tesla. The pedo guy thing. The HyperLoop bullshit. It was not as obvious because he still had some filters but it was already visible if you were paying attention. Problematic is a good description of what he was.

You are just moving the goalposts to criticize a position without being required to provide a reason. You could pick any phrase and mark it as beneath intelligent discourse. You are choosing “problematic” because you don’t like the implication.

Musk is easy to laugh at and to criticize. Problematic encompasses his lying, pettiness, racism, sexual weirdness, ego and fraud as well as anything. Regardless of the proportions of specific traits, as a whole, he’s a problematic individual. That’s perfectly cromulent.