I think many individuals in this area have felt some form of what you're saying. Altcoins obviously come with substantial risks and a lot of projects have failed due to centralization, poor management or blatant scams, The Terra Luna collapse was a tremendous wake up call. The fact that many of these coins are run like startups rather than decentralized networks makes them open to a lot of manipulation.

That said while Bitcoin is strong and proven some users still opt to investigate altcoins for innovation and alternative use cases, It basically comes down to your risk tolerance and completing comprehensive study before putting money into any project and avoiding excitement and focusing on fundamentals is definitely the safest route forward. For most people sticking largely with Bitcoin while being cautious with altcoins isn’t a bad plan at all.