This is what happens if you don't do any vocal training and don't look after your body....

NeilKenSinger

I just saw a post on Blabbermouth entitled 'VINCE NEIL Tells Crowd 'My Voice Is Gone' At First Pandemic-Era Solo Concert'. Not to Vince Neil or Motely Crue, but it's clear he isn't a trained singer, doesn't do any vocal workouts, doesn't warm his voice up and doesn't look after his body, resulting in him losing his during his first post pandemic gig:

https://www.blabbermouth.net/news/watch-vince-neil-perform-motley-crue-classics-in-boone-iowa/

Vocality

Sad to see that I think Ken might be able to help him, after all its possible to sing into your 80s hopefully he recovers.