One thing I do think is worth emphasising (so I'll say it again even though I've said it before) is that whenever someone frames this as a safeguarding issue then they've already slipped into homophobic territory imo. Unless there is evidence of children being abused at these events then this is a discussion about what is appropriate censorship, not safeguarding, and people shouldn't be scared to be frank about that if they have strong feelings on this. There have been lots of similar debates which have been resolved with hard/soft censorships methods - age classification of violent video games and stickers on album covers warning of explicit lyrics spring to mind.
And when looked at through that lens it does kind of fall apart. Are we really saying parents with babies should be banned from attending any kind of event where they might see someone in a thong or witness sexy dancing, or a fetishy themed outfit? I think most people would agree it's down to parents to make those calls. If you don't like it don't go, but if your concerns run deeper than that then how do you propose a censorship system that is universal and doesn't just apply to LGBTQ people might work?