That is a surprisingly uncharitable take on what sounds to me like a responsible and respectable choice to abide by one's principles, for which the author has offered both ethical and practical reasons. He's not criticizing his employer for letting him go, nor even naming the organization; he appears to be accepting the consequences of his choices, and talking about the situation in hopes of bringing further attention to an important problem. It seems unreasonable to dismiss this as a "luxury belief", unless perhaps you have a very cynical worldview which interprets all principled choices through that lens.