My solution to get a new dumb TV is simple. I don't want and would never own a smart TV so I use a standard monitor with a PVR/STB (Set Top Box). It works perfectly - I've used that solution for years.

The real problem is that governments have allowed the free-to-air (dumb) TV service to be bastardized, there's no regulation to protect it.

A very simple solution that would end the practice immediately would be for governments to put say 20% tax/duty on all smart TVs made by manufacturers who don't ALSO market dumb TVs.

Blame your governments for the lack of dumb TVs!