I agree with you that the real Bitcoin lovers are those who have knowledge about the nature and bright future of Bitcoin. So they do not want to waste it by trading. They spend whatever time they get in other professions and try to hold more Bitcoin with the money earned from there.
Those who sell when they make a small profit are not investors, they are short-term traders. If you want to invest in Bitcoin, you must have such a mentality that my invested money will last for a few years or centuries and I will survive here until the end. Basically, Bitcoin is for those who are patient, not for those who are in a hurry.
For investors who already love Bitcoin because they have studied Bitcoin knowledge more completely, of course they will make Bitcoin the main investment target for themselves even though they still work somewhere that still gives them enough money. Because they can use some of the money they get to buy Bitcoin because it has been made a special plan and target in their life.
While traders are people who we don't have to use as motivation or examples in terms of investment because their jobs are very different from those of investors. But if someone is looking to learn about how to trade before learning about investing, of course it is not wrong to learn both of these things as long as there is someone who is willing to provide an explanation of it. Because after all, both of these things are also ways to make money that are still quite effective at this time.