one thing that make them popular is they have low barrier of entry, memecoins are often priced low, making them accessible to a broader audience, including new and small-scale investors who might be looking for "the next big thing", but i read somewhere that only 15 out of 1.4 million memecoin is success. that mean to much popularity that some people take advantage of that to creating pump and dump scheme. also influencer lot of them promoting memecoins.