I don’t complain. I just switched to a different browser.
What I mean is that FF is the only major browser which doesn’t have an inbuilt adblocker and FF “fans” often brag about uBO working “best” on FF (because of the CNAME support), when there’s at least another browser with and in-built adblocker which supports CNAME uncloacking. Without uBO FF usefulness would be exactly 0.
If you wouldn’t care to fix an issue then why complain
Ublock origin is on every browser, who do you think is only on Firefox because of it?