Don't question why an audience appreciates your performance. Just be glad that you brought them some enjoyment. People have lots of reasons for liking what they like. Unless you intentionally half-assed the gig because you knew they wouldn't know any better, there is no reason for second thoughts. And I find it hard to believe, based on the nature of the concerns voiced in your post, that you would have done that.

Congratulations for doing a good thing for some people who needed it.

Bart