I would add to this theme that it's important to always watch where memcoin is listing. If it happens exclusively on pancakeswap, then you should definitely stay away from such a coin, because on this exchange mostly all sorts of scams appear, and such projects don't live long. If memcoin is listed on other exchanges, more famous, then it is not so clear.
Generally, meme coins are listed in other more famous exchanges or centralized exchanges after they've got enough community hype and the centralized exchanges like Binance have seen some demand for them by their members, that is when they add those tokens since they know people will trade them and they will earn revenue from fees and stuff.
For me, even if a meme coin has been listed by a popular and trusted exchange, I wouldn't still invest in it since their hype is mostly only a one-timer and they tend to just drop and drop and stay stable after the hype is over.