You are not the only one that wonders why those coins are so popular, however they are popular just as a speculation vehicle, as the people that invest in those coins know very well meme coins will not make a lasting impact on this market, this is just about the money they can earn and nothing more, and about their impact, even if I do not think a single one of them will have a long term effect on this market, as a whole they will have some influence, as besides POW coins, stable coins and POS coins, meme coins are some of the most popular coins we have on the market.