I actually don't even use Steemit that much so I don't even notice. I have started using the esteem desktop app for most of my posting and it is pretty awesome.
The one thing I wish it had was a spell checker, but beyond that it is just clean and nice to use. You should really check it out.
My guess is the resources needed to update the interface are just not available. The team behind steem is working on other projects. Maybe with SMT's a witness or other group will pick up the reins.