Hi Lorena.
Yep, for 75 he's pretty well-preserved. Hollywood-dentist teeth and all.
I heard him performing "Morning Has Broken" on a recent video and did hear some wobbles that were not there when he was younger - he hit some notes but almost lost the pitch just ever so slightly at first. Recovered splendidly, of course. And some of the power is gone from his voice. His voice does sound like an older man's voice, these days, to me. Which isn't bad and is totally appropriate, as none of us are what we were 50+ years ago, after all.
He was due to play an outdoor concert in Glasgow when Covid hit and everything was cancelled. That was so annoying - I'd been waiting decades to get to hear him live. Of course, I was going to be sitting on a blanket on the grass outside the venue, but it would have counted! Not meant to be.