The way sometimes it’s presented makes parinibbāna sounds like ontologically positive thing, which is basically like eternal citta stance already.
Anyway, I accept the view of parinibbāna according to Ajahn Brahm, Ajahn Brahmali, etc and some people say ajahn brahmali’s view on Nibbāna agrees with Classical Theravada on that topic (and didn’t get blasted with a warning), so I can just trust that it’s language misunderstanding rather than conceptually we are at different places on Nibbāna.