Explaining that emulators can be used in concert with copyright infringement does not explain what right a copyright holder has over emulators.
That merely explains why Nintendo doesn't like them, not why anyone should care that they don't like them.
Cars may be used to commit bank robberies, yet banks have no rights over cars.
It's more nuanced than this, because we need to acknowledge the real world and how those products are actually used.
> Cars may be used to commit bank robberies, yet banks have no rights over cars
Sure, but if said car had specific bank-robbing help built in, like say some magic device that immediately opens a bank safe, then the bank probably could sue.
> 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.