The pancakeswap exchange has always been the spawn of all scams, because the listing conditions on this exchange are the most suitable for listing such junk coins. According to my observations, memcoin will bring great profits only when it goes beyond decentralized exchanges. Once listed on large centralized exchanges, memcoins always skyrocket in value and provide decent liquidity to profit at current prices. On decentralized exchanges, there is very often a liquidity problem when the price of a token has risen many times over.
The worst idea any investor might face is buying meme coins listed on DEX, such as Pancakeswap, Uniswap, quickswap, and other alternatives. Most of these meme coins are rug pulls coins, and anyone can easily create a currency, modify the address of its contract, list it on DEX, and add liquidity to it. After the currency owner collects sufficient liquidity from currency investors, he withdraws the liquidity, and the meme coin turns zero. CEX platforms can be safer, but the risk is that the currency and its pairs can be delisted when the exchange platform team finds significant instability in the prices. It rises with hype, and after it subsides, you see its price in red. I have no certainty about meme coins, and I am not interested in investing in them because thousands of promising currencies have actual use and factual projects in the market.
So the thing is that buying on DEX exchanges is the most promising for memcoin gems hunters. While memcoin is not listed on CEX, it has not risen in price much and thus there is a chance to make money. This is a very delicate point and is more calculated on luck. If memcoin gets to the centralized exchange, your scenario with deletion because of the price difference is very unlikely. It makes no sense to pay exchanges a lot of money for listing your project to take all the liquidity out of it later. Such behavior of coins happens only on DEXs, because the cost of listing such projects is zero.