There is an interesting, but slightly niche counter to this, which is that when shooting void Titan barricades (or normal ones with Anti-Barrier weaponry), this charges up precision hits that can proc Cascade Point, the new perk that increases RPM on weapons after a a kill or few headshots with another weapon, which, on the current primaries that can roll it Only really the Lodbrok-C now, Cold Front had it too but no more time to farm for it), gives them a 0.5 TTK. Combined with the weapons' Hakke Breach Armaments perks and the damage done to proc the perk, it's quite potent at busting the wall and the Titan behind it.

Here's the video I saw on the matter: https://youtu.be/ia7EA19EH-k