Actually, tipping on social media posts are an excellent use for Bitcoin. I regularly tip on nostr, it works well, I wish lemmy had it too. Good luck enabling transactions that complete in under a second, globally, for less than a penny in fees, with any other system. And without requiring you to hire an absolute team of lawyers to setup accounts and manage liquidity and make deals with foreign banks to backstop that liquidity. Oh and don't forget about counterparty risks, chargebacks, currency conversion, and long settlement times! Bitcoin solves that all magically for basically free.