I think that there is one legitimate use for shitcoins, and that's fundraising. But it's a hard and blurry mess because ultimately that's what equities are for. That leads to a majority of projects being simply a way to grift.
But they aren't all grifts. Some of them legitimately are looking for ways to create real solutions.
Bitcoin doesn't solve the publicly accessible data storage problem.
Or there would not be Nostr today.