I realise most people here have played through more of GT7 than I have... I got up to café menu 7 and got bored, plus I don't play on consoles much.
I had a friend over the other night and figured I'd show him the PS5/GT7 graphics and do some split screen racing, only to not find the option anywhere, then learn via a Google search that I have to be up to Café Menu #9 or 10 to unlock split screen. Is it just me or is that insane? I promptly quit the game and picked something else.