Yes, probably there are all kinds of systems to control and autotune a PID. But that's the problem. In gamedev, PID's get constantly recommended for so many things, but when you play around with them you soon realize, that they are quite hard to get right. So then there's two ways: you dive into control systems or you just lerp the value and call it a day.
My bigger point is that the articles like the one linked here just barely scratch the surface and you cannot really jump into it and get an intuitive understanding by just looking at it. that being said, if you want to learn more you can and they can be applied to a large range of problems.
What you are insinuating is not always correct that if you model stuff you'll get a better result. Sometimes PID is more then enough and in fact better since your model can get arbitrarily complex and you don't have any tools to deal with that behavior. It's a bit snobbish that you need to have math and all the shenanigans. The rest of the manufacturing world disagrees with your premise that is very common in academic circles.
Nobody was insinuating anything. I was pointing out that going past an intuitive understanding may be a harder leap than expected.