I'm seriously considering switching from Firefox. I put a lot of effort into avoiding advertisements on all my devices and then Firefox goes and hijacks my syst

I'm seriously considering switching from Firefox. I put a lot of effort into avoiding advertisements on all my devices and then Firefox goes and hijacks my system to show me an advertisement for some Disney+ movie and now this. I was able to disable the ads with an about:config modification and I always get my installers from ftp.mozilla.org so this didn't even personally effect me, but still I feel betrayed.