Edit: It looks like the license issues has not been solved yet even though the author of postmill reported the issue about two months ago, for more info see here: https://raddle.me/f/fediverse/170274/a-reminder-that-kbin-is-still-violating-the-zlib-license-of

The original post is exaggerating (not all the Kbin code is stolen code), but the Kbin creator used code from a different open source project without any attribution, so for a while it was, to an extent, similar to "stolen code". Last I checked, the issue was resolved ~amicably, the kbin person provided attribution, and the original creator was satisfied (although I did read her say she was discouraged from continuing her project because she would have appreciated contributions to hers, instead of forking/not attributing).