Apparently playing pokemon with your wireless connection on will cause roku devices connected to the same network to enter a boot loop. This occurs both docked and undocked until you turn off your Switch and turn on airplane mode.

https://community.roku.com/t5/Roku-Device-Features-Settings-Updates/Pokemon-Sword-Shield-causing-Roku-3-players-to-stop-working-mid-stream-and-endlessly-loop/td-p/521005

https://www.reddit.com/r/pokemon/comments/dxc5yg/psa_pokemon_swordshield_causes_roku_devices_on/

https://np.reddit.com/r/Roku/comments/dx0lem/my_insignia_roku_tv_is_stuck_in_a_boot_loop/f7ohhtu/

https://gamefaqs.gamespot.com/boards/259372-pokemon-sword/78166684

You cannot make this shit up