I know both kinds that are absolutely dogshit at their jobs. I don’t say this to negate your point, but rather to strengthen it.

I’ll also add that some of the very best I know have no formal training whatsoever. But they have years of hobbyist experience that eventually led to a career and the additional experience that comes from that.

And even though success can come without formal training, I wouldn’t want to hire someone completely untrained or inexperienced in this field - you gotta have something to get your foot in the door