The point is to encrypt what's REALLY sensitive and hiding it behind something that's embarrassing but not sensitive.
Gay porn is plausibly embarrassing enough that people would encrypt it and when the Bad Guys™ come calling and ask what the encrypted data is, you can show the gay porn without revealing the REAL data.
Unfortunately, there are still countries where you better should unlock your bitcoin wallet to oficials and pretty darn hide gay porn.
Better choose something still embarrassing and not illegal anywhere. Hmm, what about own attempts to poetry?
I'm basing this on UK and US law, where "vanilla" gay porn of 2 adult men doing stuff is legal but embarrassing to possess.
Obviously if you're in a different legal climate you should use other material, your own attempts at poetry might be embarrassing but it's not the kind of thing people usually realistically hide, whereas your collection of gay porn or whatever is.
Porn in general is something that's "dirty", and thus people will plausibly hide it, especially if it's not the vanilla kind.
If you are an "out" homosexual of course the above should be altered - perhaps gay guys should hide straight porn instead.
It probably says a lot about me that I struggle to think of material other than porn that would work for this trick.
what's 'vanilla'? you mean softcore? ...softcore to hardcore is a blurred line that still puts you at risk of some overbearing authority's subjectiveness.
it would be embarrassing for a die-hard rock fan to have a stash of celine dion mp3's... but there we go again with the legal issues.