Interesting find! If you're looking for a peer-to-peer, private way to buy sats, check out RoboSats. I coordinate the WhiteEyeSats node, which offers a user-friendly way to connect on the clearnet or Tor:
Clearnet: https://clearnet.whiteyesats.website/
Tor: http://s4usqbcf2pk2xwghdzaggrxd3paiqpvnl4lm2dxp6dec3wbclgbdyiyd.onion/
