In this case, the difference between these two traders is that one fixes his loss, and the other also has a loss, but he does not fix it. And if the first trader does not use leverage, then he may also not fix his loss and in this case moves from day trading to long-term trading.
I don’t think losses matter here. What matters here is the amount of risk the traders are willing to take. We all know that day traders take huge risks compared to long-term traders. Hence, with huge risk, there are huge chances to make losses also. But also, if you take huge risks, then you might get huge rewards in return. Moreover, day trading requires more time and concentration towards the market. Now it’s up to a user to go for what according to his necessity and risk-taking capabilities.