at the end of the day thats bs.
Just because someone else does soemthing realy good does not mean that you cannot incorporate it into the game.

How are squads difficult to manage?
Infantry would be easy to kill. Thats the point.

The idea is that they can take on utility actions that are not represented in the game as of yet.
setting up traps, turrets, fixing things, taking over buildings, going stealth and applying harrassment.

Basically all kinds of advanced strategies that dont seem to be in just yet but could make the game more interresting and deep.
an infantry squad would handle int he same sense as one walker would. and would probably be as effective one on one.