why do you say that? so far i have used centralized exchanges to trade and transact bitcoin or other assets, and until now i have not found any problems with their services. i don't know how your experience is using exchanges, but your statement that exchanges are scams is completely baseless and just a personal opinion.

and personally compared to buying bitcoins on the stock market, it is better for me to buy them on exchanges like binance. at least when i buy on the exchange i can withdraw to my wallet and manage it myself, whereas when you buy on the stock market you only buy paper and you can't transfer it to your wallet.