do they all like to join Dream Steem?

I don't think so. I've written about authors I like, regardless of where they post.

It sounds like a big plus to me that there's no need to comment once being an SR.

I'm not actually commenting because I'm SR. I enjoy interacting with people here on Steemit.

It was great reading you and thanks for mentioning me.

Thank you for your writings, they are really interesting to read.