Well, they were only famous when the concept was new and people were excited, everyone was into them thinking that they might actually make some money through them but I guess that didn't work out and the concept has been going down since then and now I barely see anyone talking about these apps when previously I would see a lot of people promoting their links and stuff to get referrals for the benefits they could get if they made a purchase through them.
I think these trend coins are not really worth investing in because once the hype gets over, they will start losing value over time and they can barely be revived by their teams and developers since people stop using their services eventually and the concepts start dying off after some time.
There are coins like it is the case of meme coins that have produced several positive trends on the past, and that will most likely keep producing them for the foreseeable future, however the majority of the coins being hyped only have a few months on the spotlight only to be forgotten as soon as the novelty ends.
And move to earn projects fall into that category, they were popular for a few months and then they vanished, as they simply lack the appeal meme coins have and which can generate a deep interest in some members of the community.