[axegon_]

The key difference:

Heavy users: "this (works)|(doesn't work)|(is there)|(isn't there) and I have no idea why"

0 or near 0 usage: "this (works)|(doesn't work)|(is there)|(isn't there) and I know exactly why"

So to sum up: absolutely not. Heavy users drag the rest down when someone has to switch context and spend hours figuring out why something they "created" does not work, only to get aneurysm from atrocious code, dependency hell, practically 0 security and stupid decisions.