Perhaps there could be some more detailed information on that in the forum (sticky thread) or warning at the homepage (..in case I didn't see it)
That Nvidia problem initially made me delete MX from my machine a few months ago, because I didn't know what to do and didn't find the information to fix this at that time. Fortunately, all other distros I tried since then had their quirks too and with the second or third try I finally found out (somewhere else I guess) that renaming/deleting xorg.conf is a possible solution.
I mean, it is really frustrating for a newbie to sit in front of a black screen with only a blinking cursor ... especially when the installation of the Nvidia driver via MX Tools provides a certain level of trust that everything should work.
Quite often you never get a second chance to make a first impression.