We can assume: when we don't have any hype, such projects will crash.
Buy innovation instead of hype
It just happens that Elon Musk became a big supporter of meme coin and he fully hypes it and it landed in the top 10 with a good price and very large volume, and because of this we now have so many meme coin in the market, it's like we are back from what we have 5 years ago when a lot of meme coins were flourishing and that's because of Elon Musk, the hype will soon be over and many newbies are going to lose a lot of money if they cannot dump it on time.