As far as I am aware, Wii, Wii U, DSi, and 3DS all had the warning about removal of “unauthorised technical modifications”, alongside on the back of boxed games (probably referring to things like the Wii including new IOSes on the disc that could overwrite any cIOS on the system). A hardware lock down attempt would make sense given their previous history, as their attempts to stop any software modification before were very clumsy at best (never forget the cat and mouse race that was region unlocking Korean Wiis). Still, I’m not sure if this dock issue in particular is part of an anti-piracy drive. There’s not a lot I can think of that anyone trying to crack the system open can do through the regular dock’s signals (DisplayPort, USB, so on, that are already mostly exposed, with DP going through a HDMI conversion chip). However, this could be incorrect. If Nintendo have special docks out there for service centres that could do things like flash and dump firmware or make factory-level changes to the system (board serial number, for example) it could explain attempts at locking down the dock, and why they’ve gone to so much effort to encrypt the signals. The only way we can really know is for the Switch 2 to get modded fully and the system is explored in depth, and considering that Mariko (a.k.a. red box) Switch 1 was a tough nut to crack already (you needed a mod chip) I don’t think it’ll happen any time soon.
As far as I am aware, Wii, Wii U, DSi, and 3DS all had the warning about removal of “unauthorised technical modifications”, alongside on the back of boxed games (probably referring to things like the Wii including new IOSes on the disc that could overwrite any cIOS on the system). A hardware lock down attempt would make sense given their previous history, as their attempts to stop any software modification before were very clumsy at best (never forget the cat and mouse race that was region unlocking Korean Wiis). Still, I’m not sure if this dock issue in particular is part of an anti-piracy drive. There’s not a lot I can think of that anyone trying to crack the system open can do through the regular dock’s signals (DisplayPort, USB, so on, that are already mostly exposed, with DP going through a HDMI conversion chip). However, this could be incorrect. If Nintendo have special docks out there for service centres that could do things like flash and dump firmware or make factory-level changes to the system (board serial number, for example) it could explain attempts at locking down the dock, and why they’ve gone to so much effort to encrypt the signals. The only way we can really know is for the Switch 2 to get modded fully and the system is explored in depth, and considering that Mariko (a.k.a. red box) Switch 1 was a tough nut to crack already (you needed a mod chip) I don’t think it’ll happen any time soon.