I know three different people who were rejected by their families for being gay and I can't emphasise enough how damaging this is for a child. Going after the support network for these children is ridiculous and this thread is dangerously close to outright homophobia
The t-shirt is a specific reference to trans identified young people, not gay people. Hence the word 'identity' and not 'sexuality' or 'sexual orientation' Sexual orientation is not an 'identity' - it is a sexual orientation.
That so many gay men just assume that the T bit of the LGB is just the same as the LG bit is part of the problem. You are conflating the T with the G. But it has nothing to do with it. Indeed much of the radical trans agenda is deeply homophobic.
Whether you are aware of it or not, children and young people are being actively courted and yes, even groomed, into identifying as trans. Many of these young people are actually gay or lesbian. Many young lesbians are being shamed for not wanting to have a sexual relationship with a 'trans lesbian': often a much older person with fully intact male genitalia. This is homophobic.
That many of us have knowledege and concern that some of what is happening under the trans umbrella involves known paedophiles.
The big conflation of the rainbow cub, the allusion to trans identity and the now often very 'transgressive', exhibitionistic displays of kink sex is of great concern to many of us; including many who are gay ourselves; or have long been supporters of the gay community.