Perhaps it is not right to disparage all alt-coins. Some alt-coins make you a lot of profit. As Bitcoin is the best cryptocurrency, comparing alt-coins with Bitcoin is not fair. Decentralization system is it's main basis.If you want to get more profit from bitcoin, you have to invest and hold for long term.
In fact, it is not worth comparing Bitcoin with altcoins, because our main goal in holding crypto is to make a profit. You are right, some potential altcoins can also provide maximum profits and can even be more than Bitcoin. It just depends on how much we have invested. If there are a lot of them, that can certainly happen. Indeed, the risk is also considered that Bitcoin, with a very small risk compared to the altcoins that we know, is still suddenly worthless.
Yes, I agree that if you want to get maximum results, then keep Bitcoin in the long term. It will definitely come true.
We should also not compare the value movement of altcoins to bitcoin because no matter which angle we look at, they still follow the value movement of the mother coin which is bitcoin. As you mentioned, some altcoins can be exceeded the price of BTC, so it's up to you where you want to invest. If you want to make a lot of money here in crypto, there are many different ways to make a profit here, it can be via signature campaign, investment and trading so it's up to you which one you are better at.