Their talking about changing the terms of use for future releases.
It is illegal to alter a TOS agreement after the fact.
Now, if there is a MakeHuman 10, or whatever, released; then they can use whatever license they want to with that version. If you want the new version, you have to agree with the terms.
Currently however, the license clearly states that the mesh can be redistributed, sold, whatever your heart desires; without restriction. That applies for any current installation. It can't be altered after the fact.

Friends don't let friends use booleans.