The thing with altcoins is that nobody really care about them. The majority of people just want to earn more bitcoin by investing in altcoins hoping for a better return. So as long as they are invested into an altcoin they will praise it to heave' and back in hopes for a moon landing somewhere in the near future. Only to dump their alt for more bitcoin.
To opposite happens when the altcoin crashes down and everybody is losing money. In the hat case the altcoin is dead and always has been dead or it's a scam, pump and dump etc. (a good example is siacoin).
So in reality nobody truly cares about altcoins most of them just want to make more BTC or $. And if they say it's not true they're most likely lying.