It sounds totally fake and I think you’re right but … I can immediately think of at least one friend who talks like this about their “cis/hetero/white/conforming heavily to major gender stereotypes similar to described in this letter” peeps.

They’re not (as far as I know) writing agony aunts so much as doing their own processing in their own blog/social media space when life requires them to immerse themselves in said environments.

But even with literally having read all the thoughts in the letter (including the overwrought emotion) expressed by said friend at some point or other , I still think this letter smells of clumsy satire.