I found the following article that gives some background on this. I've had both shots and had no side effects, but we're all different -- and he's at a point in his life where he can be selective about where he plays. 
https://www.ctvnews.ca/entertainment/eric-clapton-says-he-won-t-play-venues-that-require-proof-of-vaccination-1.5519046

That's a very good point. There's also the fact that he's now had the two shots, so even though he's unhappy with his experience with the vaccine he would now qualify to play such venues. If I were in his position, I'd just be glad I could play anywhere and not worry about what the rules were for the audience; I'd just be happy to be playing in front of fans again. And I imagine there would be fans who have had problems with side effects that would feel the same way ... again, I'd be thinking that having gone through the difficulties, I might as well get the benefit of being able to go anywhere.

gopher wrote:

G. wrote:

. . . that he will not perform at any venue that requires attendees to provide evidence of having been vaccinated.    What do you think about that? 

G. (had two jabs)

if people can't grasp the difference between perceived authoritarian politics, and common sense public health policy, screw 'em   

What the Goph said goes for me too.
 

gopher wrote:

      this may be of interest:
https://www.loudersound.com/features/eric-clapton-van-morrison-and-the-perplexing-rise-of-the-covid-conspiracy-rockers 

". . . not the only pensionable truth-warrior huffing like a walrus in a health farm . . . "

Love it!

G.