These Macrumors threads were where I first noticed that yellow smearing on my iPad Pro; the issue was worse here than most other sites.I think it was on my M1 version. So seeing your post I’ve gone through multiple pages on Macrumors with My M2 and no smearing at all. So I’m happy. The issue was software as you can go back through this specific thread to see when it was fixed. I was one of the first to post here about the problem. But all good so far.
I went back through these posts and saw that ios 16.2 fixed the smearing issue. It is still fixed for me on my M2. You could try playing around with True Tone and dark mode. The issue was worse with those enabled plus having a dark setting enabled on sites such as Macrumors. That’s why it was here that I had first noticed it, but no longer.