That it would drastically harm queer people and those questioning their identity. Social pressure, fear and shame keeps people from asking certain questions or exploring their desires when it's potentially tied to them for life.

Look at the while concept of "queer appropriation" by celebrities. Their entire life is public and ironically while feeling themselves out and experimenting with new presentations, it's ironically met with backlash from some queer people thinking it's a capitalist ploy to appeal to queer fans.

Being able to just ask questions and explore is a fundamental part of understanding yourself. Anonymity is a precious gift, but one that is also easy to take granted.