I agree with you, a real Bitcoin investor usually takes a 4-10 year or longer time horizon, he doesn't worry about the daily price fluctuations, but looks at the long-term value of Bitcoin, its limited supply and global acceptance. And shitcoin and short-term trading often turn into gambling-like behavior, where most people end up losing money, so before investing, gain knowledge, understand the risks and make a long-term plan.
Investing in Bitcoin over a longer time horizon can help investors secure profits compared to those who invest in the short term. Therefore, it is more advisable to invest for the long term. And when it comes to investing in Bitcoin, you don't actually need to understand it too deeply -- you just need to have a good basic understanding of Bitcoin and also you don't need a lot of money, just enough that you feel comfortable investing -- even a few dollars is enough to give it a try. Once your confidence builds, you can try investing your discretionary income consistently. If you're too hesitant from the start and feel like you lack understanding and preparation, you'll always procrastinate, and you'll never invest in Bitcoin.
I agree with most of your points, when you said that it is not mandatory for beginners to start with a small amount. It is not mandatory to know everything before starting; start with a small amount, adjust as you learn, I really like this saying of @JayJuanGee sir and I follow this point in my heart. Well, let's come to the point, investing in Bitcoin in the long term is reasonable, but it is not right to say that profit is guaranteed.
No investment guarantees 100% profit. Therefore, beginners should not expect guaranteed profit, use the DCA method and gradually collect Bitcoin as much as they can with discretionary income, cash flow, emergency fund, emergency fund and the money left over from their necessary expenses and maintain a long-term perspective. When someone tries to consistently build a strong Bitcoin position rather than guaranteeing profit, their long-term Bitcoin progress becomes easier.