I generally don’t like the phrase ‘controversial’ as its used to describe conduct by politicians or celebrities.
A controversy involves a fundamental disagreement that two or more parties have for an extended period of time. In the context of politics, controversial is often used to describe remarks that are either:
a) clearly racist or prejudiced, which is almost always followed by some manner of apology (or dedicated non-apology), or
b) factually incorrect. It’s not ‘controversial’ to claim that the Earth is about 6,000 years old, it’s wrong.
The word seems to end up everywhere. Jonah Hill saying some bigoted shit a couple days ago is controversial. So is abortion policy. And the status of the Armenian Genocide in Turkey. If most celebrities apologize for their behavior when confronted, there really isn’t some protracted disagreement. Perhaps the grave Alec Baldwin has been digging for a while might qualify, but that’s a rare instance. It’s not controversial, it’s cringe-worthy. Or just simply dumb.