The problem with that is that it gives a completely incorrect idea of what an individual country looks like, in a way that gives a false impression to kids about what the countries even look like. Suddenly they have to look at one map, and recognize a country, and then look at a zoomed in, more accurate map, and recognize it in a completely different shape. To be frank, most people's geography knowledge is already bad enough- doubling the amount of shapes they need to learn is basically a non-starter.

For classroom instruction, a globe should be being used anyway- that's the gold standard. Why go through all the work and effort of introducing a worse solution, that doubles the amount of studying, and is made completely useless when it can be replaced by a $10 globe?