With the little knowledge I have, I have seen a lot of people scalping and making it than those that does a full trading(hours, days) but they tend to lose so easily can we say it greediness or it's not advisable generally
Scalping is also a full trading, there is nothing called non full trading. Trading is trading.
Know that scalping is also still very risky. Some traders may want to scalp, if the market go against their opened position, they can tun it to day trading and they may later even lose. You can think it is what some people are saying it is and profitable, but very risky.
If you scalp rightly, you will make money though, especially if you use averaging and not going more than 5x leverage for bitcoin. Not more than 1x leverage for altcoins.