they don't train them, and logistics - if that refers to supplies, etc - don't matter because we've seen reports and VODs of how underequipped or starved Russian soldiers are out there.
None of that really matters. When I say "overwhelm," I mean exactly what you'd expect of Russian tactics. Send out a thousand men running into the front, shooting their guns wildly, supported by extravagant missile strikes and some competent Wagner commanders now and then to support from the rear. If almost everyone in these waves dies but the Russians inch up bit by bit, then they consider that a victory.
Those are the tactics we have been seeing. And the other poster implied that, just through time, Ukraine could lose due to numbers and exhaustion. Thus we should just keep trying to send better weapons.