Sure some traders don't know that they are traders. Some traders call themselves investors, even though they are not investors.
Exactly, you're right. I believe this is the reason why when they are into their trading practices like buying and hodli for few months or 1-3yrs, they sell when they are in profit. Hoping to buy back when the price falls. Many forum members here also are traders unknown to them, because if you ask them how to I go about investing in bitcoin, they'll say buy in the bear market and sell in the bull run. They will argue with you till infinity that they are not practicing trading, if you tell them. Instead, they'll say that they are investing. Of which investing is beyond this. A full circle for the ederly ones, and ten years above for the younger ones
This consciously or unconsciously happens because of the lack of understanding about investment and in fact, currently there are still many people like that, especially for beginners who sometimes say that they are investors just because they managed to hold for a few weeks or months but immediately sell even when the profit is only a fraction of a percent of what they bought before.
This is the importance of proper learning about what investment is before starting to learn investment techniques and for now the situation is reversed where they focus on investment materials but they don't know what investment is.
So it is not too strange to see many people who mix ideas between trading and investment but consider themselves right by saying that they are investors but are not aware that the purpose of the investment they are doing is actually a little off from what it should be.