Everyone recognized him? I doubt that. I had to look him up on wiki. The Cosby Show ended 26 years ago. Most Trader Joe’s customers never saw the show and the others had long forgotten the rarely seen actor on the show. So, what, he quits a job and is now not only an unemployed actor but an unemployed stock boy.
Good news is that someone else who needs a job will take it and nit complain, “look at me...”.
He said that being recognized in the past wasn’t problematic at his job. Was there suddenly going to be a gaggle of star watchers.