This is because those who were able to increase their deposit by investing $100 and getting a thousand, write about it regularly. But there are a lot more of those who bought a meme coin at high and sold it at the lowest price. So the risks associated with buying meme coins are very high.
The decision of buying a memecoin is the trader's and they have to face the consequences of that, even though it is possible that a memecoin may become hugely hyped in future it is common to see such coins eventually go down and become close to nothing with developers having abandoned it gradually but completely.
Bitcoin is much easier to get into and even though its single unit can be divided into satoshis, people want to go for the altcoins which are recently launched and have been running on media hype. Once the hype slows down the coin crashes and then sob stories start coming up everywhere.