Well I have a very different vision of this, for me the altcoins are the ones that need bitcoin, in an eventual disaster or crash worldwide, I think that the altcoins are the ones that will always bleed very quickly, that's why when I'm looking for a way to do things better, I can say that new forms of self-protection can be generated, some are looking for altcoins, and that is not bad, but we must see that altcoins cannot survive without bitcoin, 'because bitcoin is the one that has life Without bitcoin there are no altcoins, bitcoin has a life of its own, altcoins if we look closely will always follow bitcoin, in fact their movements are very similar , at least with altcoins that are older their graphs are very similar to bitcoin.
Don't look at it this way, think about the contributions of altcoins towards the adoption rate of Bitcoin and the overall market, if it wasn't for altcoins, Bitcoin wouldn't be as widespread as it is today because altcoin projects promote the market, and when the market is promoted, people tend to look for the leader of the market and we all know who the leader is, it's Bitcoin, of course.
So altcoins have greatly helped Bitcoin gain the level of adoption that it has today, this is why I also think that Bitcoin did need altcoins even if it doesn't need them anymore because it has become extremely popular now, but for adoption in the past, altcoins played a great role.