If only people stopped using centralized exchanges....
Without exchanges to which you can simply wire money or request withdrawals with a click BTC would not be here and crypto usage with be a hundred times lower.
Nobody is going to use a coin if you need each time to search for a vendor on a shady platform, compare the prices, research the guy reputation and then always live with the fear that he has paid you with a fake account and you risk getting a chargeback.
Exchanges are needed and people like them how they are, otherwise, you would be seeing thousands of transactions on other platforms, but nobody cares about them in reality. I consider even LB a pain in the ass to deal with because of the lower prices and only traded there if I needed funds really fast.