I was planning to do something similar to that.
I am not talking about the shiny parts. That’s normal wear.
In the next to last pic, when I zoom in on the chainring, the teeth on the right/forward half look normal but the left/rear teeth seem cupped on one side. I can’t tell if it’s the teeth or the pic itself.

I do understand that the bike isn’t new. It has blemishes, but I expect some on a used bike.