Yes they do, some of them are actually really usefull...
The memecoin Dogecoin [nofollow] is perfectly decentralized, and has no public "inventor" which makes it kinda like Bitcoin and the SEC will not go after it, because who should they take Legal Actions against.
Memecoins also tend to be favorable for some investors, especially if they have some interesting history, or failed projects like FTX Coin could also be of interest