I generally don't use DTube because it is slow and is full of shit content. I was recently talking about this with X who trashed both DTube and Dlive for being slow and the content quality. X is a reputable steemian. You will never see him making it public though. It is not just X. Many other high rep steemians talk trash about many steem DApps in private but they will never say it out public because that will have negative impact on their steem account.

This "everything is fine" and there is not reason to go away thing doesn't make sense. Steem Inc's sponsorship isn't legally binding. Their sponsorship is more like donation. And both Dlive and Dtube won't be able to achieve mainstream adoption if they stick to Steem. The problem is with Steem itself. The account creation system is a total mess. People need to stake in order to vote which is also another big problem.