We can not be sure about that.
If they are here for transactions, to reduce transaction fees, they are here to stay, because it benefits many people who use bitcoin for transactions. If they are here to make transaction fee worse, more expensive for most of Bitcoin users, their chance to stay here is not too good. When bull market ends, bear market comes, hype gone, demands to get rich will disappear and those projects will die.
Forget about those projects with promise for layer 2, x, y, but their root idea is to help their team richer by inscriptions, etc. because they will die in bear market. Look at side chain projects like Liquid, Rootstock.
https://liquid.net/https://rootstock.io/I believe in future of those side chain projects.