Literally only reason to use Firefox is that it still blocks ads properly.
If Mozzilla brings AI or removes ad blocks then they are every way just worse Chrome and there is zero reason to use them over Chrome.
I guess I should already start porting my Firefox extensions over to Chrome since this ship is sinking stupid fast.
Firefox may say they will not block anything and still end up adopting something like Manifest v3.
Android blocking side loading is more or less in the same ballpark.