in my opinion a lot of people lost interest because dcr is really difficult if you are not used to hack banks or fbi accounts.
is not a coin for general public, with low computer skills.
i am desesperated trying to stake and i don have even help in decred forum
i am really pised off with decred
BTC is the only longterm successful cryptocoin FULLSTOP!
All the other coins are cheap copys of Bitcoin and will never have a chance beside BTC.
LTC failed, Doge failed, VTC failed, ETH failed, DCR failed...
I think its too early to say if any of these failed or succeeded.