This article of mine is a trifle. Do you see how short it is? I wrote it in response to Sender Spike, a Medium writer who defends the compatibility of mystical monism and uplifting morality. By contrast, I take a more existentialist, cosmicist line.
The article uses Buddhist images to illustrate my points, but the argument is perfectly general. It applies to all forms of mystical monism. That's why I say here nothing specific about Buddhism (Four Noble Truths, etc), apart from referring to bodhisattvas as potential examples of supposedly benevolent mystics.
Again, the article I linked to in my last comment deals directly with Buddhism, the noble truths and the eightfold path. Believe me, when I turn my attention to Buddhism, you'll know it. Below, for example, is another article of mine that deals with Nishitani's Buddhism and the Kyoto School.
The argument in this article is simple: if multiplicity is an illusion, why does it matter what seems to happen in that multiplicity? Why shouldn't selflessness be just as wrongheaded as selfishness with respect to the illusions in that multiplicity?
Now that argument may or may not apply to various forms of Buddhism. I don't tie it directly to anything here apart from the mystic's underlying metaphysical monism.