Most Bitcoiners can add to that: Not utilising #Monero when it is literally made for an adversarial environment. nostr:nevent1qqs2tcl492f4fcm2jtqsgx9wjh2hxe52qmeekan8y4k9y9zzjtrp7rqppamhxue69uhkummnw3ezumt0d5pzpckv7l8jqspl8u4y54dn9rcduwlrs4v2040nxce0m2h0cunvrj8tqvzqqqqqqywsu8cq
Not being pragmatic and choosing the best tool for the job because of ideology is the most common mistake. People will die on their sword while crying before they even admit they were wrong.
People who say Monero is a shitcoin have obviously never bought anything from a dark web marketplace. Cypherpunk LARPers.
Or normal commerce? especislly now that crypto and tax evasion is a big concern. Its simply too risky these days to trade any goods/services for fiat or traceable crypto in p2p way. (Facebook marketplace/etc) If the people you have traded with are 'bad people' its likely you will get a tap on the shoulder and questioned. So what happens? We use fiat and ebay instead and they get all thier fees and i cant buy used underwear easily.