How do we defined crazy?

[Angrboda]

The reason crazy is not well defined is that it is not a technical term, and thus has no specific technical usage.

You seem to be conflating a couple of things.

In my opinion, derived from experience, we define syndromes and other diagnostic categories as an aid to matching individuals with treatments, therapies, or interventions that are likely to benefit them (or sometimes others) according to whatever their self-interest determines is appropriate (the two common complaints usually addressed are subjective distress, or dysfunctional behavior).

What you seem to want to be addressing does not fall in that category, and more properly falls into the category of bad ideas and bad behavior (ethics). In my opinion, neither of these should be medicalized as being pathological mental behaviors, for numerous reasons, not the least of which are the ethical concern that doing so does not appear to serve their self-interest but that of someone else who does not possess a legitimate interest; second, it's doubtful that any of the treatments or treatment modalities used for the treatment of mental or physical disorders would be cost effective and productive, even if ethical. The treatment for bad ideas is education and discourse. The treatment for bad behavior requires a pollitical solution based on our best understanding of what ethical principles require.

Anyway, that's my first stab at it.