I'm part of a facebook group for gig goers, and some of the people there were involved, and were non-too happy. Some just thought it was odd, whereas one said he was so uncomfortable he didn't go in. I think apologies, and refunds, along with lesson learnt would go a long way.
I am not sure the individual needs exposing, as it sounds like someone in charge of security at a fairly small venue, overreacted to events at another gig by the band. It's as likely to be "fear of paediatricians" as anything "woke".