It may just be me, but I've found the Steemit community to be uniquely positive. I'm not sure if that will stay though, I wasn't there when FB started, and I'd be willing to guess it got more toxic over time.
Although the arcane nature of steemit might keep troglodytes out.
Steemit Is just an interface. Dlive is also a sort of interface. Steem is different than steemit, it is a blockchain. It's kinda impossible to stop others from seeing your posts. The way the system has been designed.