If true this will be super interesting

There's no doubt in my mind that Nintendo will be trying hard to get this onto Switch 2, but I think Rockstar has enough on their plate launching it in a good state on PS5/Xbox so I think it will be a delayed release at best if it all. Remember, even if Rockstar is willing there's no guarantee it will work. Look at Borderlands 4. Gearbox tried but couldn't pull it off on the hardware. 

If this is true, expect a 60fps mode on at least the PS5 Pro.

The biggest challenge in porting this to the Switch 2 is that it's supposedly very CPU-intensive. A lot of extra work and time would be needed for it to run at a stable-ish 30 fps on Switch 2.

But imagine how much it would sell in its first year if it's launched on all major platforms including PC! Maybe these delays had something to do with a suprise "all platforms at launch" announcement.

I am skeptical the S2 will be able to run the game, but to be fair many third-party games are running better than I expected. So, who knows.