It's not so much a choice between Smart TV vs. not Smart TV anymore. If you buy a TV today, it is very likely to be "smart". You can just decide to use the features or not (or when to stop using the features).
Of course, if you aren't using the built in receiver for OTA broadcasts, you don't really need a TV, you need a monitor. You can get commercial monitors that are just like "Smart TVs" without the smarts and the receiver that makes it a TV instead of a monitor, though you may have to look outside of the consumer-focused retailers that you think of when buying a TV.
All my TVs now are actual TVs, but they are more or less permanently set to HDMI1 input and all the other input source switching is handled externally. The exception being Netflix on the non-theater TVs, for that I usually use the on-TV Netflix client.
And, if that fits what you want, great. OTOH, If someone is trying to avoid unwanted features of SMART TVs, some of which may not be separately opted-in and which generally rely on network access, providing network access to the SMART TV to allow the use of the on-TV Netflix client is self-defeating.
(I'm personally not so concerned about those features, though I've seen plenty of people who seem to be, I just want to avoid relying on SMART TV features because they are additional potential sources of failure, and because the "SMART" parts become outdated much faster than the display parts.)
So, the TV effectively becomes a monitor, but cheaper.