>The politician in question has filed more than 700 criminal complaints about what people have said about him
I'm not sure why that matters in the context of this discussion. He is free to file as many criminal complaints as he wants, no? Living in a free society means that idiots can do idiotic things like filing 700 criminal complaints.
>The problem is that merely insulting someone can be a crime at all
I disagree that this is a problem per se. Pretty much all jurisdictions across the world have laws like that. It really depends on how exactly the law is implemented.
In fact, American libel and defamation laws are, in some ways, more problematic than many European ones simply because of how the legal system works. If you are sued in a place with no SLAPP laws, the mere lawsuit can be so expensive that it can have a chilling effect on free speech, even if the defendant ultimately wins the case.
(I do agree that laws singling out politicians are stupid.)
I'm not sure why that matters in the context of this discussion. He is free to file as many criminal complaints as he wants, no? Living in a free society means that idiots can do idiotic things like filing 700 criminal complaints.