Do you know that there are many tokens that offers nothing but rewards when holding them? They most times ends with ---nomics you hold the tokens you get some altcoins in your wallet every 4hrs or so, what is your view on such projects?
You mean rebase tokens?
Most of them are essentially ponzi schemes that offer early adopters significantly higher rates of return compared to the latter ones.
As you said, there is virtually no practical use case for these tokens and as a result there is pretty much no long-term prospect for them. OHM forks are already dying out - just look at Klimadao, Wonderland and Olympusdao itself and their price action over the past few days.