I just saw Riccardo Mori’s April post on fragmentation and it was great; especially the idea for the combo app. I agree about keeping things separate on my end: I have my WordPress long form blog, and 3 (“social media” posts, photos, and links) hosted on M.b. I could probably do the same on RGF with categories and plugins (and might consolidate someday; the three M.b blogs’ urls are subdomains of my WordPress site).
Right now, my two big frustrations are FaceBook cutting off their API (most of my art collaborators and old friends are there) and I can’t seem to post to multiple hosted blogs from the official Micro.blog iOS app. So to post links or photos, I end up going to the website.