Oh, the HUMANITY!!
Ok, all joking aside, most products have spec bumps year over year. The car analogy made by another user may not be the best, but the concept holds just fine. Apple is continuously releasing newer technology in terms of silicon, memory bandwidth, etc. It's only reasonable that at some point they need to add that new tech into existing product lines. I wouldn't expect M1 MBP owners to be running to upgrade to M2 models, either. It's just not cost effective and makes little sense to me.
You may (probably, even) see it differently, and that's fine, but in response I feel compelled to ask: What is the current technology (screen, camera, etc) not doing for you that you want it to, other than "moar pixels", etc? I'm not beating you up here, I'm just curious. The iPP is a VERY mature product for what it is, and I can't see that moving the camera about 5 inches to be in the center of the top bezel in landscape mode a thing to compel me to spend hundreds (or even a thousand in some cases) of dollars on. Realistically, iPads in general blow most or all of the Android competition out of the water, which is why Apple can charge what they do for them. Would I have liked to see a mini-LED screen on the 11"? Sure, but when you figure out what that would cost, I probably wouldn't have bought it. Product development is all about balancing the wow factors you *can do* with the price point you *can sell*.