Stay caps are not the sort of things that "wrinkle" when a bike is crashed, I wouldn't worry about that as the frame seems sound and straight in the seat cluster area. What happened to those stay caps is mysterious: they would normally be the place for a brand-name to be engraved (pantographed) but that cap looks like somebody "scribbled" all over it with the panto tool. I wonder if someone intentionally tried to erase what was already there.
If so: what was it and WHY?
How about a close-up of both stay caps?