Rich,

"What's "pearl-clutching sex negativity"??"
   I too wondered about that.
    But, hey, once a movement has it's own argot, they're on their way to being taken seriously and  supported by the masses. Good luck to them. Every smack in the face of the establishment is one small step for mankind. Now, however, the vast majority of folks have more pressing issues.

   I would just admonish them: Don't undercut and divide the economic and political revolution. Join it. Changing the economy would change everything. More economic equality would  mean more equality for LGBT people.
  Contrarily, look what's happened in the 10 or 12 years since same-sex marriage has been normalized and gays as an identity demographic have moved up the socio-economic ladder - millions have been pushed down. The world is more divided than ever, income disparities worse than ever, inequality worse than ever, people more insecure and hostile than ever.