The fact that youtube is nothing but a propaganda machine that censores anyone with a grain of brain and comon sense. Anyone that opposes the governments narrative of any given event get's demonetized. There is no freedom of speach on youtube and good content is hidden in plain sight while shitty content is boosted to the top.
Dtube solves the mentioned issues through the immutability of the Steem blockchain. Many alternative media journalists have already joined Dtube in their quest of not being Alex Jonesed from the internet. That will never happen on Dtube and reasonable people find that very useful and empowering. That's why, in the future when the censoring and oppresion get even harder, people will masively leave youtube for alternatives like Dtube.
Oh yeah, and I don't spell youtube with a capital letter because I have no respect for such an evil platform.