There are already some PS5 games getting this treatment.
A bit disappointing either way though as someone whose only console is a Nintendo Switch 2.
However, the CPU would be way behind the and storage on Switch is somewhat limited. I don't think people would want 180GB chewing up the 232GB of available storage on the system.
It would be in the impossible port territory but it seems like it could be JUST within grasp. This is all dependent on how well the Series S performance is. If it stinks on there, I doubt they will ever bother with a S2 release.
Note that Sony significantly improved the PS5's security on firmware 14.0 and above, likely to prevent GTA 6 from getting pirated. Ripping a PS5 game apparently requires a hypervisor exploit, and the last known one was sold to Sony. This means that nobody will be able to rip GTA 6. Even if it was ripped, they would then need to "backport" it to run on hacked PS5s running earlier firmware versions, which would take some time and expertise.