when the bull run was around four years ago, memecoin was very hyped, the developers saw the same potential for it to be repeated during the current bull run, the developers saw how the oldest memecoin was always the one that gave big profits to its holders, so that was like a signal that many Cryptocurrency lovers will also enter meme coin to make big profits again during a bull run like this
You made a good point there that the older memecoins were able to pick up with the just ended bull run because of their already established market that help them to easily pick along with the wave at that moment, but the big deal is that most of the newer memecoin were finding it hard to fine a place in the market and before their know it the short bull movement got stopped along the way making them to fail to pick along.
This is the reasoning why .any investors thought that memecoins are not doing well in the current market since their failed to make some progress in the bull run that just ended and being the first bull market since the memecoins got their hype And market appearance.