I honestly think Bitcoiners themselves are the biggest threat to Bitcoin and it's a massive blindspot. It's hard for people to hear because people don't like to self-reflect, but it's vital to think about it if we ever want to reach mass adoption.
Let's face it, the ''plebs'' or die-hard maxis often are very aggressive in their defense of Bitcoin and this can be very off-putting to outsiders. If you want to convince everyday people that Bitcoin can improve their lives and the lives of those around them, you have to be able to hear them out, address their concerns, and eventually let them make up their own minds.
Too many Bitcoiners live in their own bubble and dream of a utopian libertarian world without governments. Sorry to burst the bubble, but this has never happened and will never happen. If you want Bitcoin to succeed, you'll need to be pragmatic and realistic.