pros and cons of a stock market listed crypto ETF and a crypto trading account ?

I've been dabbling in crypto since 2017. Mostly I let my son use his account and give him funds to invest. He made some bad decisions : "look dad what I did for you" ???? I want to take control of my own investments. I have an on-line retirement account and it's easy to purchase an ETF. I can buy and sell it instantly (biz hours) and move the funds to cash or some normal company stock. I also have an account with an exchange but the idea of getting my bank to make some kind of wire transfer deposit into it, just seemed like too much effort.