Earlier quoted context omitted.
If that had any ounce of truth clearly they would have tried taking down mineserver and minetest long ago. If projects gets taken down it's because of copyright infringement, not because they are referencing the name. Removing all references to Minecraft won't do anything if the project contains assets or decompiled code from Minecraft either.
Minecraft is a trademark. You can't make references to it from your own work. Feel free to research mojangs history and intellectual property laws. You don't have rights, only privledges given temporarily by the corp. They can choose to C&D whenever they like.
With all that said I have never heard about Mojang or Microsoft sending C&D letters over someone giving their project a name vaguely referencing Minecraft. Do you actually have any examples, because when I google Mojang and C&D I only get examples of Mojang receiving C&D letters, not sending them.