In the past, I have been moved and inspired by singers at singarounds ... but that seems to happen less and less these days.

I suspect that may be partly due to familiarity,as you get older and more experienced there is less new and different material to enjoy,in a nutshell "you've heard it all before"
There have always been new and weaker performers,some have failed to improve,some have eventually blossomed.
I think also many clubs may be more forgiving to some weak performers because they are long standing attendees and regarded as friends.