Which is perfectly possible just without this ability. Just let the squad get suppressed, and the others flank the MG. Any good player will try to switch targets to the flanking squads manually. It doesn't matter much if your middle squad is immobile by suppression or hit the dirt. It's immobile, so the defender will switch targets.
You either time the flanking maneuver well enough to make it or not, but this ability does not help.
You're actually taking your own squad out of the fight. Even before it got suppressed, which technically means that you allow the opponent to switch targets earlier than necessary.
They hated him for he spoke the truth.
The ability seems to be geared more for when the enemy has to approach you. You get defensive bonus but cant move so defending instead of assaulting would make sense. However due to being attached to SMG upgrade it has limited window of usefulness. It would probably work best against VG but they can just nade you and wait you out and sturms could just concussive nade and mop up. LMG grens would just look, wonder why, and then move on.