I think that all meme coins are like all other coins must be useful for people to have a big community and a lot of users. For example 100XCoin helps to support the homeless in the streets of Los Angeles
https://twitter.com/100XCoin_/status/1400828293591486466/ It shows how useful can be cryptocurrency and increase the trust of the people to cryptocurrency.
Liquidity is needed for any coin. It is very important that the coin has a large number of users and a developed ecosystem with a listing on exchanges to create a need for the coin.
For any memecoin, liquidity is important, for this you need to have a huge crypto community of users to create a need for the coin.