I dont see any disadvantages of stop loss, stop loss give many advantages for trader, when first jump in to crypto trading i did not use stop loss and finally i been loss more than 50%. Trade on the any asset like forex, stocks, commodities, crypto etc we should be use stop loss to minimize the risk and to avoid big loss. In spot or margin trading, stop loss is should be to use so we can make profit in consistently.
Stop loss is just a way of minimizing the risks the market holds and a lot of people who are just starting to trade, usually don't know that and since all they are just after is buying the bottom and selling the top, without any form of strategy, the importance of stop loss will be a hard thing for them to phantom.
Stop loss has a whole lot of huge advantage for those who trade the market and even for investors that have some little bit of trading knowledge as this is usually a way to know that even if you are taking a risk on the market, you understand that even with your strategy, things could go wrong, but for the fact that the reward is more than the risk, I am certainly going for it, but still keep the stop loss active in case the other side of things happen.