Plenty of people think drag is just the thing for kids - loud, glittery, brightly coloured. And 'inclusive' - bonus!
That drag is riddled with misogyny in its caricatures of women is never going to be a big issue with most of society, which is generally comfortable with sexism.
A genre born out of specifically male culture, predicated on the idea of men mocking females, and often incorporating or revolving around sex/adult humour and references is generally not really best suited for children, but it's apparently 'bigotry' to say so.
The fact that the act includes literal crotch-grinding, however, is apparently a step too far.