I posted this before but....
Well if you read Ramm's comment, you should notice that they are not opposed to bailing, but they won't implement it without Complete Exit Animations.
Considering you got 2 to 4 Positions in each Tank (if you consider maybe future Updates which may/or not contain Tanks with 2 Slots), and 2-3 Player Slots per Tank.
So lets assume 3 Exit Points per Tank on Average, if we only include the announced additional Tanks (2), this would make it necessary to create 3 (Positions) x 4 (Tanks) x 2 (1st/3rd Person Animations = 24 Animations which they have at least to do.
And no those are not "easy" Animations, if one really wants to do a thorough Job, this is really tedious work. As every Tank has a different interior/exterior.
Considering that the Game is in an Alpha Stage, there will be enough Animations left to be done in the Game (1st Person Sprinting Animations for example ^^).
In addition to that the announced Transports will need some Animations too (yeah its a good guess that they want to do Exit/Entry Animations for Transports), not to forget the Interior Animations of the Crews, the loader for example has probably different Animations in EVERY Tank, as the Driver.
This is not laziness!!, its a simple fact that you have to allocate a lot of Man Power to the "simple" Exit Problem.