Investing for the short term or long term is actually fine for any investor because the goal is still to seek profit, and each investor has their own goals and targets. If the price rises 10%, selling it won't be a problem they just don't want the much larger profits that can be achieved by holding it for the long term.
What I disagree with is his statement that caution is needed when investing for the long term, when in reality, he should be careful with short term investments, because selling Bitcoin in the short term wastes an opportunity. For example, if he buys Bitcoin at $80,000 and sells it at $100,000, even though he makes a profit, he won't have the opportunity to buy it again at $80,000, or even $90,000, or even $10,000. So, it's better to invest for the long term to avoid regrets.
Yes, they're traders, so they wouldn't have a problem with that, as their thinking is likely limited to that. I don't blame them, but it's a shame they're taking actions that only benefit them in the moment. Investing in Bitcoin long-term, however, can yield significantly greater returns. Furthermore, holding Bitcoin long-term not only reaps profits but also protects our money from being eroded by inflation. I believe this is a crucial point, and many people may still be unaware of it.
However, I don't want to be pessimistic about anyone, as the steps taken by individuals in the investment world are, of course, what they consider best. So, the most important thing is holding it long-term, and I always pray that my Bitcoin holding goes smoothly, and that when the time comes to sell my Bitcoin, it will exceed my expectations. Because, in my opinion, that's the most important thing right now in my Bitcoin investment journey.