Inasmuch as I am not a huge fan of meme coins, I don't understand why you have to be specific on those running after meme coins to warn them on the survival of their holdings.
The fact is that any crypto project can get delisted by exchanges for various reasons and most importantly the breach of trust and also lack of trading volume. So many have been delisted and many others will still be delisted. My advice is to always invest with caution and always follow up on your portfolio so as to know when to exit if necessary.
Despite the various facts that meme coins will be delisted on exchanges because generally due to lack of daily trading volume that does not reach the exchange regulatory requirements, the reason people warn to be careful with meme coins is because meme coins are no longer hype and traders have left the meme coin hype era . So anyone holding a meme coin except for Doge and Shiba will likely drop in price with no further upside potential, hence turning to dust in the wallet. The meme coin hype is so low because it doesn't have any utility associated with the new meme coin project, although it ends up linking to the NFT concept and metaverse but not the actual utility.