Just got this email:
Hello,
We are reaching out to let you know that we have made the hard decision to remove the Twitch App from the Nintendo Switch. The app will be removed January 31, 2024.
Thank you for supporting Twitch streamers and communities on the Nintendo Switch. For more Twitch...
Huh, I wasn't even aware that the Switch had a Twitch app available. I was still under the impression the only video apps were YouTube and Hulu... Guess I am out of date then.