Just use an AppleTV, Roku, etc. and connect it to the HDMI port.
TV is just a screen. That is how I've used mine for the last 5+ years.
I find roku really ad heavy and it sent tons of traffic back to roku.com. Same for firetv.
It won't be "just a screen" for much longer if people continue paying for TVs that do this bullshit.
Saw this elsewhere:
"It will not let you do anything until you download the app on your phone, make an account, and log in on the TV. You cant just change it to HDMI 1 and use a Firestick. I set it up with a throw away email, then deleted the app, and took the TV off of the WiFi."