Tribute articles point out his jazz inspired drumming style that other drummers praise as unique and hard to copy.
I will have to re-listen now.
I paid more attention to Ringo than Charlie, my mistake?

He admitted to substance abuse during the 1980s but eventually quit.

Was a good enough “Graphic Designer”
that he did not financially need to do rock and roll,
kinda like Mick had a good job in accounting.