MX is a nice distro. However, it is also true that it is just Debian with XFCE, KDE, or Fluxbox on top.
Your comment about not “being a fork of a fork” is ironic. MX Linux is a fork of AntiX which is a fork of Debian.
This is a not a criticism of MX. I love EndeavourOS and it is just Arch with a different installer and some sensible defaults. But I can also understand why some people look at MX and wonder why they don’t just install Debian with XFCE directly.