And you are a better person for having "ridden the dinosaur".
Regarding the chops- one thing that starts to happen (to most, not all) with age is some "unpredictability" comes into play, usually in the mechanical areas of flexibility, range & endurance (the physical aspects of playing a brass instrument).
Regardless, Curtis is still Curtis. The SOUND is still there & the message is still strong- the years of experience have resulted in a vast (bop & blues) vocabulary. Curtis is one of the major trombone cats, and he still has a lot to say. I haven't met him, but if I did I would thank him (I got to meet J.J. for about 5 minutes. I avoided the thousand questions I had for him- it was after the set and he was relaxing. But I did thank him (that was important to me).
I hope I get to cross paths with Curtis. I hope *if and when* I make it to 75 I can still play. In general the larger trombone mouthpiece is more forgiving than the much smaller trumpet mouthpiece, so the effects of age (chops getting stiff) tend to hit the trumpet players harder than the low brass guys,
I'll pick this recording up for sure.