Depends on the case, you're right.
We just had another granny claim the holocaust was fake, I'm pretty sure that she wrote some books about it tho. Not sure, nobody really cared. Everyone knows she's full of shit.
But yeah, for the most part the law isn't enforced.
However just the existence of a law prohibiting me from saying things is questionable... I should be allowed to say everything I want no matter how stupid..
The general public knows what to listen to and what not..
PS: I'm not a denier btw.. I post a lotta shit but I dont act all that retarded irl. lmao