Totally agree....I found no benefit to the global shutter sensor assuming the 120FPS and precapture features aren't dependent on it. And as you say I don't think they are.
I'm pretty confident the A1II won't be a global shutter and really hope it isn't. Just give me 50MP at 60FPS with pre-capture in an A9III body with the AI chip, customizable Zone modes and everything else the A9III has for QOL that the A1 doesn't and they can have my money even though it will be overpriced compared to the competition.