Firefox doesn't suck, and matches Chrome. But there's no accounting for user behavior. I have seen user behavior that is mind-blowingly stupid, and subcultures of user activity and tendencies trace well with product loyalty trends.
Some user subcultures are retardedly dependent on browser extensions, never clear their cache, retain cookies for the lifetime of their laptop battery, and seemingly need hundreds of tabs open. And none of this shit makes sense to me.
These are likely the same people who carry around phones on the brink of overheating while locked, and in their pocket, because they have to have a thousand apps installed, in order to feel like they're getting the $1,000 phone they paid for, I guess. Their emails are constantly peppered with "sent from [app|device|service]" signatures, and they claim microphone permissions are why ads target them.
Honestly, if you've been blaming the browser, it's more likely that you're the one being your own worst enemy.