Yeah, I'm quite surprised it's this bad.
Two things I was always on the lookout for to cross over to Samsung was camera and software. The software experience -- with the exception of maybe one or two minor things -- is solid. I think Samsung finally nailed it down. It's smooth, it's stable, many of the extra features are actually sensible and helpful, and Samsung seems to be doing a great job with monthly sec updates + the promise of three years of OS updates. A- grade here.
But with the camera's still photography, it seems they just haven't quite closed that gap or have decided this sort of skin-smoothing and overexposure is the way to be. Either way, it's once again, holding me back from leaving the Pixel.
I really want to like the S21+ for all it does well -- as you say, Samsung gets a lot right -- but the results of these photographs are very disappointing. Based on reviews, I was lead to believe the differences would be minor and would come down to mainly "preference." This is not preference. The Samsung photos are outright over-processed, over-smoothed, and over exposed.
The question is, is Google capable of putting out a competitive flagship device that finally catches up on hardware and features for the Pixel 6? I honestly don't know.