An exbf of mine(non addict and super cool) called behavior like this the purple squirrel syndrome:
If a person tells you something like they don't believe in voting, you can ask why. You may disagree, but it's not an uncommon things and it can be debated. If a person says "hello! I'm a purple squirrel" You just say "why, yes you are and a what a fluffy tail" and move on. You don't ask why, you don't try and reason or figure it out. They are coming from a place of such utter madness there is no common ground of sanity to build the discussion on.
Active addicts spewing nonsense about being drugged purple squirrels. Nothing you can do but not put on a squirrel suit yourself.