[2020] Why is there no auto team balance in BFV?

Hi :)

I have been playing Battlefield since BF3 (I played 1942 and Vietnam as a kid).

When the numbers of each team are no longer even, or close to even, why doesn't the game swap individuals over? Is it because squads are stuck together like glue and they use a system they don't intend to compromise on?

In BF4 each team would usually have the same number of players even if there was an exodus. Doesn't seem hard, considering they used to do it before.

Someone please tell me what I am missing because I can't grasp what the benefits are of the current system, or lack of system.