Preferably, I'd have a 4:3 OLED TV or laser projector at a decent enough size that it can just comfortably show all kinds of formats.

My desktop is 21:9, my Macbook and Steamdeck are 16:10, my TV and Nintendo Switch are 16:9, and my iPhone is some weird aspect ratio. So it's not like I'm not used to varying formats. And I actually like it when movies take liberties with the screen format instead of forcing everything into 16:9 just because it's the common TV format.