Those are sone useful tips! I agree with you that commenting is really important for a social media platform.
I remember when I started blogging on Hive I was enthousiastic about the rewards, but none of my blogs received human replies, which was quite disappointing.
Engagement is key, but yet not rewarded that much. Unless you are replying on a blog from a hiver with a high stake. That is often why they do get a lot of comments.

I've started the @topcomment initiative last December. I've started this curation initiative to reward quality comments only.
Were still growing, but we already have a $0.20 upvote thanks to delegations and some people follow the trail.
I hope this encourages people to engage more in the comment sections.