Less so for fridges, but in the TV space there are few alternatives. You can get a more expensive commercial display or maybe a projector, but most people don't even consider those options and the price is a lot higher. If you go to your local retailer, practically every TV on sale is likely going to have intrusive tracking and advertisements across all price points and mainstream manufacturers.
I expect a lot of manufacturers see the "successful" conversion of TVs from a one time sale to a near inescapable advertising platform and are trying to emulate that in other product segments.
I have a "smart" tcl tv I bought during a sale. The only thing it costs me is that it takes somewhat longer to turn on than my "dumb" dell monitor.
It's not connected to the internet, it doesn't show me any ads. When I (rarely) turn it on with its remote it boots to the last used input. If I turn it on through my set-top box, it boots to the box's input. The box can control the TV's sound volume with its own remote, and the TV has an "ambient light sensor" which allows it to adjust to ambient light. I never need the tv's remote.
It's a 65" TV which cost less than my 32" monitor. Sure, the colors aren't as precise, but I don't use it for phot editing, and delta E is actually very low. The sound is good enough to not have to turn on my stereo, and I don't need to turn it up to 11 to understand voices (my dell has 0 sound). For watching mostly voice-based content (think talk-shows, comedies), it's great.
The company I work for regularly buys "dumb" screens to be used as "signage" (it's part of what we do). I've seen those screens. The image isn't any better than my TCL, but they cost 3-4 times as much. Sure, they're supposed to run all-day-long for multiple years and burn your retinas in 0.2 seconds flat, but I only watch my tv a few hours a week tops and not in direct sunlight.
So I'm a very happy camper. An equivalent dumb TV wouldn't be a noticeable improvement for my use case.
I do something similar with an LG TV, but my point was you don't really have many good options if you want a TV that doesn't at least try to track you and the average consumer doesn't really know it's happening nor how to avoid it. Also, using a set top box on an external input is not free from tracking as most smart TVs use screengrabs and automatic content identification to figure out what you're watching even then. You can theoretically opt out deep in the settings, but it's often made confusing to do so via dark patterns.
As for network connections yeah my TV is on a firewalled VLAN that I can selectively let out if I want to do a software update, but my personal conspiracy theory is that we're gonna see cellular modems hidden in TVs at some point to pipe data back. GM got caught doing exactly that in their cars without telling anybody not long ago and I think it's already mostly forgotten. Even without that, most consumers want to plug their TV into the net anyway to watch Netflix, probably not realizing it's a poison pill.
I'm certainly not anti-"smart" appliances and I think they can add a lot of value if done well, but in response to the OP I'm saying that it's getting to the point that you're forced into it by the market regardless of your preferences. General consumers and legislators don't seem to care enough to stop bad practices via market or regulatory forces.
> in the TV space there are few alternatives.
This is true, which is why when my old, non-spying one breaks, I won't replace it.