> That merely explains why Nintendo doesn't like them, not why anyone should care that they don't like them

I don't think it has been tested in courts yet but the general idea is that you have to violate the DMCA to use a switch emulator, so people making switch emulators are making tools to help people circumvent the switch's copy protection.

Which is also a violation of the DMCA.

Like I said, it is nuanced.