But some consoles are modded, that's for sure. Perhaps that would allow investigating further exploits.

Still, console modding that depends on services provided by those not interested in the modding, like the company behind the console itself, is generally not long-lived. So looking at how modding in this era of services usually goes, I'd suggest keeping yours offline, and on the lowest firmware version ("system version") you can.

At worse, put it online to download the patch for supporting physical Switch 1 games if needed, and figure out how to remove the nagging update message that will keep appearing afterwards (maybe the safe boot option like with the Switch 1 would work?)