That’s just webmentions. There isn’t a difference between the #IndieWeb micro.blog community and the #IndieWeb #WordPress community. I am using Bridgy to syndicate my replies to your Tweets from my blogs and your replies are showing up as comments because of webmentions. I could reply to any micro.blog post and my reactions would interact the same as another micro.blog post. I think some do syndicate from WordPress to micro.blog, but not sure better ask in the #WordPress channel of https://chat.indieweb.org