Some meme coins are intended to scam investors money in a short time. Definitely they are the one who are plagiarised other potential meme coin which has a pleasant market value. Few meme coins that can bear the market instability. Therefore being careful is important to avoid falling into scam meme coin. Short time big profit is not a guarantee to earn.
But there are a lot of people taking a chance speculating on meme coins just like gamble their money because many people love to do it, that's why the meme coins keep incoming every day because there are still many people would like to invest to earn quick profits.
Also the ease of the token making make people randomly created a lot of meme coins and with a bit hype, the coins have decent volume on the market which is really bad for crypto environment