What magic is this? https://
Good work so far. As you note, micro.blog already offers a lot of the IndieWeb building blocks. And it recently started to offer an option to register your own domain, addressing another of your points. It's a good option for people (who can afford it) to explore the possibilities, and the nice thing is you can always move your content somewhere else if you want to. That's another good reason not to rely on silos.
Seems to me that your home page is great as a professional About page. Just add some #indieweb markup like an h-card. You have a contact form, which is important, what more do you need?
Chris Aldrich's discussion of the rewarding discovery that a friend has read something that you are reading, before you see it in their feed, is spot on. It is fun. And it reminds me of two things. The most important is that I really need to get to grips with my tags, both in Zettelkasten and, perhaps even more importantly, in Pinboard.
The whole business of bookmarking, storing copies, highlighting and annotating remains a source of confusion for me. There are just too many moving parts. I quite like Chris' suggestion of making it a topic at a future IndieWeb Camp. I've got two projects on the go, either of which could be my thing in Nürnberg in a couple of weeks.