saying that investing in bitcoin is a job is a mistake in thinking, because investing in bitcoin is quite risky and someone who wants to make this their job is a person who really wants to be involved in risk, and this cannot be said to be a job. and saying that it is the hardest job in the world is probably too much, because if you look at a neurosurgeon, nuclear expert, and many other difficult jobs, then investing in bitcoin is not that difficult. because as you said, the most important thing in bitcoin investment is how someone can be patient and wait for the right time to sell, and that's not too difficult if you have experience in this matter.
Okay, there are two things I want to address in your statement. First, is bitcoin easy? Not that difficult? It seems like you have not tried doing any bitcoin stuff, like trading, buying bitcoin, holding it, and many more ways to earn. If you said that you know bitcoin, then why would you say that it is not that difficult despitethe fact that you said that bitcoin is risky? That's why you are not considering it as a job; your statement there contradicts that. If there's a risk in something, then expect that it is not simple and it is not easy to do. Take note of that. Even experts with a lot of experience can still make mistakes and lose money through bitcoin or any crypto currency. Its not just buy, wait, and sell; you need analysis to decide when to buy in the bitcoin market. How long can you wait or will you wait, and when is the right time to sell to maximise the profit? Don't make it sound so easy.
The second thing I want to address is that bitcoin really cannot be considered a job because it is an investment. "Investment" anyone who will think of bitcoin as a job, then it is not quite right. As you've said, bitcoin is risky, so it cannot be considered a job. It is more like an investment and can be a side hustle for anyone who wants to earn extra but is ready to take on the risks that come with it.