I don't think it's over-sharpened, but it has too much contrast. It makes the photo look darker to give it depth, but it just looks over-processed to my eyes. I work a lot with Photoshop and I would have to increase "clarity" and "contrast" to get a similar look on a raw photo. I'm not crazy about it.
I'm going to update to 14.4 to see if there's a difference in the warmth or yellow tone. I'll report back.
My 7+ is great but it's had its share of problems, mostly to do with audio, with people not hearing me well enough. I'm not sure why and that's why I upgraded, plus the better camera on the 12.
I was considering the S21 Ultra from Samsung but I'm just not crazy going back to Android. Despite being rigid, iOS is a cleaner look and less buggy. Otherwise, S21 has a better deal, better camera, less expensive, not a yellow screen, plus they're offering extras like headphones, S pen, and a free case. Oh, and my 7+ is worth more to Samsung for a trade-in and worth $100 less to Apple. Rip off at every turn...