Why can't they just ban by account? Anyone circumventing bans is going to be committing identity fraud or other crimes so shouldn't they be passing it to law enforcement if they want to pursue it.

Switch hardware will likely be resold for decades so it's obviously going to be onerous for consumers that the devices may be invisibly crippled just because they want less copyright infringement.

They don't even need to ban accounts permanently, it's pretty disproportionate when you think in years and decades of a device's life.