I think that MEME coins are trending but no more so than other coins. As you have mentioned with the advent of the over-appreciated Doge coin according to the tweets made by famous characters, more and more people are starting to make such coins. Almost all of these coins do not have significant value or a strong case to be realized over time. Nowadays, this is no longer a trend and most of the traders prefer to keep some other assets instead of MEME coins. But this MEME coin can also be held for the long term.