Is there a reason why one couldn't just buy a "smart" TV and just never connect it to WiFi? I have never used a "smart" TV, mine is a dumb TV with a Chromecast

Is there a reason why one couldn't just buy a "smart" TV and just never connect it to WiFi? I have never used a "smart" TV, mine is a dumb TV with a Chromecast sticking out of it.