Why are ranged using LB so much now?

[Zari]

3 times yesterday my DF group wiped on A8 because our party had low dps and the ranged kept using LB3 in the final stage so we couldn't clear before the auto kill.

To be honest, if your group had such low dps that you reach enrage in A8, unless the boss had a sliver of hp left I doubt the melee using the LB instead would have prevented a wipe