If you're yelling at people to switch to Firefox, you're way behind the curve; the browser wars are over, and Blink/Webkit have decisively won. Gecko/Quantum is effectively a dead end at this point, even if nobody wants to admit it.
The meaningful battle lines are now drawn along forks, not engines, and Google is betting we'll use theirs mostly because we're lazy / it's good enough / other browsers have annoying quirks - and they're right about all of these.