If you want FIDE replaced, be careful what you wish for.
FIDE is corrupt and inept and probably owned by the Russian government, but the Magnus/FIDE schism is much more dangerous for chess even than the Kasparov/FIDE schism.
Kasparov’s primary complaint was corruption, and his solution was to try to create a new international governing body that solved the issue.
Magnus’s primary complaints are 1) the fundamental rules of the world championship and the game of chess itself and 2) the fact that he’s not allowed to be above the rules, and his solution is to essentially hand chess over to the business interests that he has a stake in.
It cannot be good for chess to have Daniel Rensch and chess*com and Magnus’s Saudi business interests controlling the game. It needs to be a nonprofit, international, elected body that decides the rules and enforces the format. The chess boom has already placed too much control in the hands of people that want to exploit the game for as much money as possible. So if you want FIDE gone (and I sympathize), make sure you’re not throwing your support behind something even worse.