In my opinion, the stoploss is not much important if you are investing a little amount like 10$, 20$ .or if you are long term trader and spot trader. But if we are investing a huge amount like 100$,200$ and if you are future trader and margin trading then the use of stoploss is more important as we cannot predict the nature of market, as the crypto market is very volatile and the only thing to not use stoploss is your rresearchc on the particular crypto tokens.
I would say: If you are investing (like loooong Term) there is no Stop Loss needed, but you should still observe what happens, once a week or so.
If you are trading, depending on your broker, your account might go into the negative and therefore you absolutely need and SL, imho. Especially with
BtcUsd where it can happen in seconds, if you have bad luck...