From looking around out of curiosity when this stuff about LG TVs came out, Samsung sells explicitly Non-Smart 65" Hospitality Displays, but they cost $1030 (US), which is over twice as much as their consumer TV with the same specs.
Also somebody pointed out Spectre TVs (which seem to only be sold in the US, and I couldn't really find an European equivalent, the closest being a Spanish brand whose largest non-smart TV is only 40").
I couldn't actually find any large dumb monitor except for the ultra-wide curved ones, but I only looked around for half a hour or so.
Personally, the way I already use my TV (wired to a Mini-PC running Linux and Kodi, which has Series and Movies as video files as well as using free IPTV for live TV, and I even have a wireless remote for it so it's used just like you would a traditional media player or Smart TV) is already perfect for a dumb monitor.
(A more straightforward way to get a privacy respecting setup like this would be to install LibreELEC on something like a Pi or a Mini-PC and get the same kind of wireless remote as I have - my setup is only as it is because I didn't know about LibreELEC back when I put it together plus it also works as a home server as well as my home NAS, since an N100 Mini-PC is very overpowered to just work as a Media Player).
It really seems that the only way to keep at least some privacy is to ditch corporate devices altogether and just put together your own media player box (which, as I wrote above, is pretty straightforward with something like LibreELEC).