The company itself wasn't actually solving complex problems and therefore the developers involved couldn't actually understand the level of complexity I was able to deal with.

I get the feeling a lot of developers believe dealing with state in a react app is a complex problem, but I've been doing this stuff for 25+ years and left that behind as complex long ago. I know that's probably going to come across as arrogant, but it's how I feel about the entire thing. I see people all the time squabbling online over very specific source code related things as if they're important.