It's the fact that Bitcoin is lacking fungibility, which I think will have quite big impacts over the long run. Your example is just one of so many that we could give. This is the main issue I wish I never met with BTC, and unfortunately the only solution is.. moving away from Bitcoin to a more privacy-focused coin as long as you want your coins to be fungible.

Your Bitcoins are now being flagged every day by Chainalysis. Today they're clean, maybe tomorrow they're dirty. The algorithms they use and how they get to tag coins in a certain way.. who the hell knows? The thing is, your 1 BTC is unfortunately not equal to my 1 BTC and I think this is honestly one of the most serious issues of Bitcoin that haven't been adressed yet. Lots of people mention mixers and Wasabi, but they forget that once I take that route, I'm gonna be 100% considered a suspect/criminal by blockchain analysis companies and tools.. because unfortunately today is the day privacy is seen as a crime.