Sounds more like a legal issue with permitted spectrum use than an arbitrary LG policy.
"Saudi Arabia's CITC hates this one weird trick!"
Well, I have Sony and Samsung (both middle east regions) but they dont have any restrictions in these areas. I only see these kinda quirks with LG all the times.
It's more likely an out-of-date regulatory database that predates 5GHz being allowed in those regions.
Linux's wireless-regdb has proper 5G regulatory information for at least SA, CY, EG, QA, at least since 2017, just checked. The TV in the repo is 2025 year model.
It seems like OP lives in Iran. It seems like at least a good part of the 5GHz band is available there. [1]