I’m no Forest Gump military genius, but there is a risk that fast traffic flow through “land corridors” can end up being the enemy’s. Massing forces in fixed, pre-known, confined areas also creates dandy “kill zones” for an enemy with lots of artillery, missiles, drones, and bombers. The Russkies must be alarmed by these briar patch opportunities. And that’s all I have to say about that.
We used to build mine fields and leave some open for this reason. Create a funnel, a kill zone. This is even easier, they don’t have to set it up.
I think that they just want white man to off each other. We’re the most uppity.