youre not wrong, they spent a lot of time refactoring things, and still are.
that said, the list of changes in the last several versions is very long, and the code base is no longer trivially similar. looking through the waiting prs, there are a lot of interesting bits like extending microblog AP connectivity (tag handling).
the mbin guys have been pumping out releases steadily since the fork, including implementing managed documentation and version numbering. it has well exceeded kbin at this stage.
theyre prepping for a 1.7 release soon. when was the last kbin update? to me, theres only one stale project here.