The thread does highlight a problem though.
And it's not just singers.
As you get older there are things you've always done that you need or want to carry on doing. Maybe you don't do them as well as you have done. But don't notice the extent.
The most scary is driving. My latest car has all the automatic bits (even dips the headlights for me) so I have to do less multitasking. Might extend my driving ability for a few years. SIL says by the time I buy another it will drive itself.

Same with callers - I've seen too many who were once good. And again, will anyone tell me when it's time to stop. Trouble is, in many clubs, all the callers are the same age. I often wonder how good a caller I would have been if I'd got the steep learning curve bit done before starting the over the top bit.