

One more idea… If you’re willing to temporarily add the Debian testing “deb-src” repository to your sources.list, which should be slightly safer, then there’s a chance that this might work: https://wiki.debian.org/SimpleBackportCreation
Seems not completely crazy, unless MX has its own way to do that.
I’m sort of tired of articles describing some catastrophe that happened ten years ago and saying “it’s worrying.”