It seems hyperbolic to compare slurs to a word for a group that's merely unpopular.
The framing of Latinx as a word unwillingly forced onto Latin Americans by outsiders is exactly why I brought up that some people use it to describe themselves.
Thing is, there are also many Latinos who are complaining about it being forced on them and/or treat it as a form of cultural imperialism (not necessarily in these exact terms, but e.g. "anglos are mutilating my language"). So it can be offensive either way, and it's down to how many people you're willing to offend.
The framing of Latinx as a word unwillingly forced onto Latin Americans by outsiders is exactly why I brought up that some people use it to describe themselves.