You can make an argument if it's visual only and does not affect simulation it's still realistic..
Visual directly and inextricably linked to the physical simulation. Here's a simple example, imagine - flying shell hits the tank. Where should we see an explosion if the tank is 2 times more than necessary? Inner or outer?
Most of the players will accept any variant as a bug, and will be absolutely right.
The same will happen with animations of soldiers, they will become skiers when you scale they, the same visibility, wheels running at moving over bumps, etc. All this begins to look disgusting, and I absolutely do not understand why it needed
Any playing with scales is acceptable only for schematic views, for example on the map or in the operational phase.
However, it's obviously your game and you CAN zoom in to see the action plus there is decent tactical view to keep track of things unlike CM "we will never do unit listing" games.
This feature looks like a bug (and in fact is a bug from realism point of view.) And skipped during preproduction of APK43 in 2009.