the thing is that ...the only decentralized coin that exist today is Bitcoin.
All the other are shit coins - remember what happened last year when someone said that Vitalik B is dead and ETH lost 50% over night

https://qz.com/1014559/vitalik-buterin-dead-a-hoax-on-4chan-crashed-ethereums-price/

Few hours later everyone knew it was fake news
And ETH is the second coin after BTC

imagine what would have happen is it was a smaller coin or if it was true.

Bitcoin will not loose its value because there is no one controlling it.