They can discuss whatever they want, potential or confirmed, but yeah: betrays perspective. The team built a PS360 game, built a new engine based on that, made a remaster for the Vita, and the franchise has never been on anything but Sony hardware and people think P5 is a 3DS game?
That betrays a textbook lack of knowledge and/or perspective.
I guess I don't put as much weight on the series' precedence as you do. Pretty much anything is a possibility and I can't make an objective claim when none of us have anything to back it up except for what has happened in the past.