I've used busy once or twice, but then I get busy and forget about it for a while!
You're right that is not a blockchain level change yet. I've noticed that a lot of Steemit changes lately are 'nudge' type changes that encourage better behavior for newbies.
Some do others don’t.
For instance I don’t understand why they removed the post view count. It made it easy to see if upvotes were bought or not. Always strange to see a post with 2 views but with 50 upvotes 🤔
Really curious when HF20 will be released and what it will mean for the steem blockchain!