Is this CXL, tho?
I believe so. It's labeled FQHH, the usual Aero label that doesn't differentiate between CXL and whatever midweight horse that may be front quarter as well. But going by the weight and feel I would say it does appear to be CXL.
The above two sure look nicely patinated with all that dirt along the creases. Eric's German barnstormer, too.
For me, a leather jacket has to be quite old and well-worn to have a patina. I agree about the use of the word to mean an added layer (of dirt and oils). The other stuff - surface wear, break etc. - that's just where the patina can settle more easily into the hide.