From what I've heard, it's not the ammo carousel that blows up. It's actually the ammo that's inside the tank.
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You see how the bustle is low to the ground? It's very hard to hit it actually. In the T-90M it's even protected with Aramid. The reason why Russian tanks blow up is because the extra ammo is often kept
inside the tank, and
outside of the carousel bustle. In the T-90M, this ammo is stored in a new bustle that's outside of the tank.
So it all comes down to poor organization and discipline. Well-trained crews are unlikely to experience a catastrophic explosion.
All Russian T-72 tanks have shit reverse speed. They also can neutral steer.
This is a design choice, there are T-72 variants that can do both, but Russia has decided not to invest into this capability. Aside from the reverse speed, the Russian MoD has been vindicated by a lot of these decisions. Not APS, crap transmission, but lots of tanks.
IMO, even if Russia had the best tanks in the world like the Leopard A7 or the M1A2 Sep v3, they still would've suffered horrendous losses just from the way they treated this operation in the first month. The problem wasn't the tank. It was the way Russia approached this op.