

I’ll give you a better Gary Stu example - Superman. The guy was originally designed to be all-perfect, all-knowing, all-seeing and incredibly strong with a reinforced moral system for good. He has to always be the one saving the day, he’s got the looks and that ran for a very long time. Up until the 90s did we get ballsy writers to actually kill him off temporarily, but even then he came back shortly after renewed.
Quite frankly, I don’t like Superman that much for that reason. Sure he’s been going through different arcs in the past 30 - 40 years that challenges his mystique but I can’t care enough for him to even feel slightly in favor of him.
Batman is more of my level. Sure, he has his fair deal of plot armor, but his origin has always been that he was just a guy who has a lot of wealth and wears a bat suit while wielding lots of technology at his disposal. He can still get his ass kicked, he can still be succumbed to everything a normal human would suffer with and isn’t too afraid to admit that he’s human who would need help from more capably powerful heroes.

It’s a class-based metaphor that judges how successful you are when compared to an idealistic version of someone who is successful by class. The Jones’s are portrayed metaphorically as this rich, up-to-date, always on top of things, always getting things first and other things. If you don’t meet those kind of qualifications, then you’re not keeping up with the Jones’s.