seems to have ceased working lately, at least on some pages.

Blokuje skoro vše... děkuji

Brilliant!

Ublock Origin is the best blocker out there imo. The default filter lists work well enough and after enabling a few extra I almost never run into those pesky "turn off adblock" walls that never manage to convince me to do so anyway. I've also got it set to block annoying things like those dumb cookie popups that appear everywhere despite me not living in the EU at all.