> people can say vile racist/sexist/homophobic things
The definitions of what speech falls under "racist/sexist/homophobic things" tends to be highly subjective and varies between who you ask and who's in power, which means they instantly become hammers of those in power to suppress speech of the opposing camp.
It's basically tools for selective enforcement and will 100% gonna be abused because those in power can never be handed a powerful weapon and expect to never misuse it for personal gains.
Like for example, during Democrat rule, before Elon bought Twitter and before Trump came to power, it was considered homophobic to say there are only two genders, or to even ask how many genders there are, and could get you banned on Twitter and other major platforms. Pointing out crime statistics on illegal migrants was considered racism, and so on.
So once you brush everything you don't like under the "racist/sexist/homophobic" speech, you've successfully achieved totalitarian rule while cosplaying as protecting democracy, which is what Europe is trying to do.
Both of those examples invalidate and/or endanger people though.
For example, repeatedly asking how many genders there are ignores the obvious 'its a continuum' and implies its a finite number. The person asking almost always then goes on to push that there's two because that's "how its always been" and then folks can't get gender affirming care are are essentially classified as "nonexistent".
The right, being rooted in conservatism, loves to ressurect old arguments in the name of " just asking questions" and have the rest of us redo the battles of old. For example, race science is discredited pseudoscience, there's no need to keep bringing it up unless you're trying to use it for, imo nefarious, political means.