Even D.Tube allows self-voting, it is actually encouraged on D.Tube. Blurt got rid of the downvote button and although there are Hivers that want to see it gone, it still is thriving.

We were going to invest more money in the Hive ecosystem and release a token on the second-layer chain, but we're scrapping the entire idea and taking the concept to DogeChain. We're just going to avoid Hive altogether for any future projects. The only benefit for us on Hive is the interest rates at maximum.