This lecture doesn’t show great understanding of Foucault. Yes he is unethical. That is pretty much the point of his work: he is trying to call into question the whole category of being morally ‘transgressive’ as something that is constructed by history. You can like it or hate it, but applying moral judgements to his work shows clear misunderstanding. He is, like Nietzsche, trying to push western culture completely ‘beyond good and evil’.