Which altcoins from the last few years where there was a lot of positive talk about it has failed? And by failed, it means either it has went to 0 or it could be worth very little. Like it could been 50 dollars at one point and now 0.50.
There are countless promising talks that we encounter last year and countless of them went off too quick. Not a surprise as many scam projects really be going that way as the project itself will never grow by just a promising words but it must consist with the usefulness of the projects which is actually missing with them.
Also I am talking about coins that were at least in the top 50 or top 100 in coinmarketcap and then it just fell apart. I don't mean a coin that came out and everyone had praise of it and it didn't even break the top 100 on coinmarketcap.
Defi projects, Memecoins, and many from hypes projects will turn down after reaching the peak. Quite very common to see this and only valuable coins that have a use-case will survive.