Normally I think people who object to shows they haven't seen are ridiculous but this person wanted parents to bring their children to a show with full nudity, at which (from their website content) descriptions of sex acts would occur.
You don't need to see it to know this isn't OK.
People who think anyone who disagrees with them must be right or left wing (or that one of those is always bad and the other good) are so childish they shouldn't be given column inches in national newspapers, or the Guardian.