There is no typo. I’m not telling not to use them, I’m telling not to recommend them. Especially on a chart that mostly targets beginners. The audience that wants to learn the ways of Linux to such an extent will find LFS eventually. Having distros that solve clearly non-beginner problems in a chart like this is harmful in my opinion.

You shall not advice to indulge in NixOS nor Gentoo. These take root in forbidden scripts, one must walk these depths of their own volition completely, clean of else’s influence. Us tell such atrocities exist and share the way we use them, but never condemn one to do so as well.