However, for me, I believe Bitcoin is really risky but the weight of risk depends on how much you are capable enough to manage its risk. But I have to agree with you that if bitcoin is risky, altcoins are even riskier as they are. With their pump and dump scheme, at the end of the day what we see is that most of them have turned into dead coins except for those who have established their credibility on the market.
Bitcoin and altcoins are two completely different things. People only look at the protocols, blockchain, rewards, transaction speed, but they forget that bitcoin is the only crypto without a company or a real person behind it. Vitalik is dumping his ETH on investors which is why if you biu ETH or ADA or XRP you finance the company that launched it.
Bitcoin is something that you own 100% without any interference.
That's why bitcoin isn't risky at all. In the long run it goes up and if run scared every time it drops by 5% maybe you shouldn't buy it.