Man, you are much better off! I had a substantial tear in the RC tendon and also apparently tore my bicep tendon too...and I pretty much blame it all on another GasGas'er
Zipped under a partially down tree and thought there were just leaves (where the other GG'er comes in, he made it though) I went under at about 25 and thought that I knocked my arm off...Yeah, I actually looked down to see if it was still there! Finished a 30 mile ride and then noticed some bruising. Got it fixed a year later and spent 9 weeks in a sling, arm is a noodle. Best of luck on the rehab. I am 53 and agree that things don't fix as fast as they used to do.
Rob