I think most people's main beef with this lootbox is the assumption that every crate would give at least 1 part for the ZTQ. Instead that part could be replaced by a prem tank rental. So it becomes even more disgusting RNG which makes or breaks people's chances of hoping to get the thing without having to spend a dime.
The funny thing is I wonder how they'll rig the purchase lootboxes so that there may be a greater chance to get rentals in place of the parts. It's easy for them to do dishonest work in the name of profit. Will they do it? Hopefully not, but they absolute can if they wanted to.