i dont know the legal basis used, or the validity. i just know that i wouldnt want to have to spend the time or money fighting twitter over it
a C&D is reasonably understood as an intent to sue if you continue whatever they want you to cease.
my comment can be read as "i just know that i wouldnt want to have to spend the time or money fighting twitter over it (where "it" = ignoring their C&D and being sued)"