So whats the point locking it behind teching?
The tank cannot fight with other tanks. No one will pull a command panzer as their first vehicle. In practice you choose T3 or T4, build a normal tank, THEN call in a P4 to receive aura boost.
Actually, you get pak wall, command tank and stall for T4.
Its extremely old strat that only got more valid with the aura changes.
Command tank ensures your squads won't be one shotted by nades or mortars, your infantry can fend off opponents more easily, your AT guns aren't decrewed easily unless directly hit by some big guns.
So no, it does make perfect sense to get command tank as first armor and it was perfectly valid since forever.