Most have things like statues or that mountain you mention, things that do not represent things like skin tone or hair colour accurately so unless someone differs ethnically a lot from the rest of the population you would never know those details from those kinds of portrayals of their appearance.
Which countries are you culturally aware of enough to know that to be the case?
The US has mount Rushmore and the Licoln Memorial as an example of a counter point.
I think most countries have images of their old leaders in a similar way to how UK has it. But I’m curious to know where this is not true.
Most have things like statues or that mountain you mention, things that do not represent things like skin tone or hair colour accurately so unless someone differs ethnically a lot from the rest of the population you would never know those details from those kinds of portrayals of their appearance.
Source? Sounds like nonsense to me.