I'm always so extremely confused about the trope of the personal project having shit quality... Like, if I'm doing something for myself, that's exactly the place where I wanna do something amazing, like literally all my private projects have much higher quality than my work ones - because in the work ones I'm forced to use stupid conventions, old tools, am not supposed to touch "legacy" code, etc etc etc
As such, since companies have their private code on GitHub, that's where I would expect the shittiness to come from, not personal private projects.