There is a big difference here.
That AI spits out images humans may want to take a closer look at.
You want the AI to summarily remove photo image data.
It is no more pronounced on the 13 than it was on the 12 or 11 for that matter, and likely others; you have simply noticed it, are aware of it and are now actively looking for it.
Once I noticed the effect several years ago I began to see it everywhere in stills, YouTube video and all over TV.
It hasn’t been that noticeable in theatrical films because they dedicate several million dollars to post-production to erase such things pixel by pixel, just as you could by the use of a utility such as Snapseed.