This isn't really a decentralization issue because most of these trades happen off-chain. It's a regulation issue, and even then, regulated markets also suffer from manipulation.


I can't speak for him, but he probably meant the $6000 resistance is a byproduct of artificial trading and manipulation, meaning Bitcoin's price should be lower than it currently is. I don't think it really matters in the end (though I'd still want to stop it) but I could see how it could concern traders.