the extortion part is heightened by the registrar for .sucks where it is asking organizations who own the trademark to pay 2500/yr to get a domain name
You can buy $yourname.sucks for $200/y, but someone who wants to criticize you can buy it for $10/y.
Tiered pricing that charges more to people who aren't looking to disparage themselves is predatory.
Or its bribery to prevent free speech.
No, really, they're just making stuff up as they go along. The idea of this kind of "extortion" has been around for decades, since the early rounds of DNS root name expansion.
/s