"Is steem still alive?"
No.
"Any stats on what users are doing?"
Sure. Most of them are creating posts. They focus on their own posts. They do not care about other people's posts. Nowadays thousands of Steem blockchain posts are being created every day (9-10 000 on average), but the average number of comments per post is only 2-3 on the Steem blockchain, and most of those comments are bot comments.
Nowadays the real human interaction is rare on the Steem blockchain. This will probably stay this way. The Steem blockchain is doomed by its own users.
what you think about hive? don't tell me that same words wouldn't apply? ;)
The same (or rather even worse) is true for the Hive blockchain: Hive Statistics – 2020.03.21.