The most egregious action I've seen was from a Vizio smart TV I bought several years ago. It shipped with a simple remote control, and a tablet with a control app preinstalled. One day I turned the TV on and was notified that in order to use the updated UI I would need to reach out to support to order (and pay for!) a new remote that had additional buttons.
i had a vizio tv in high school, i remember that it quite literally took 10-15 seconds from the moment you turned it on to actually see live picture from an HDMI -- it spent at least 2/3 of this time displaying a black screen with a giant 'VIZIO' logo. most egregious thing i've ever seen.
this isn't a phone where you turn it off rarely! this is a television!
This is our current living room tv. It was perfectly fine until a random update made it take 10-15 seconds to turn on and then 15 seconds if you want to change inputs. It’s still our living room tv but I would not buy another Vizio.