If you knew all that, then you shouldn't for a second had thought Bitcoin could kill other tokens/coins. Those others would die off for that singular reason that they don't have any usecase. I've been in this space long enough to realize that once the usefulness of a project is exhausted, the project dies off. I've participated in IDOs and have seen how launchpad tokens were in hot demand while the launchpad "made waves" – that's, when it was the rave of the moment. If I don't remember any, I know of BSCpad which was the front token of the Bluezilla launchpad project. Where is BZ today? Where is BSCpad today. So, it's not about Bitcoin trying to sniff life out of altcoins but of the fact that most altcoins aren't worth it. Naturally, people will invest in what they perceive to be viable. That's what happens with altcoins and Bitcoin.