That’s true but operationally they can’t pay for all their expenses in cryptocurrency so they will need to sell it for fiat first.

I use the parsedown library with a custom PHP index page to serve markdown files as HTML.

If they’re blacklisted then how will they sell the cryptocurrency for fiat and be able to use the fiat in any meaningful way?

Zero, it’s always outdated versions of Firefox or Chrome (if a UA is even provided at all)