Nah, the OP of one reddit thread admitted he tried more than just his backups:

• Dude is a prolific poster in Switch hacking communities and he used an account which he previously used with a hacked Switch 1.

• He admits trying the migswitch with the Switch 2 and it starting downloading something.

• They got an online ban, so offline games and such still work.

You can agree or disagree whether piracy should be legal or whether backup copies are permitted (depends on jurisdiction), but this dude obviously played with fire and got burnt.

TL;DR: don’t be stupid and get banned for breaking ToS (whether you agree with it or not)

Link:

https://www.reddit.com/r/NintendoSwitch2/comments/1lcqw4d/comment/my2exjd/

Edit: some more context, in case people are scared their Switch 2 will get bricked or something

The problem with renting rather than owning your hardware and software

Nintendo are pieces of shit. However, they warned everybody before the console even came out that they would be doing this to the console if you used any kind of mod hardware.