With some careful split micro, husks can force past defense of an army of equal population supply generally intact.
As they cost only 1 supply(thus have at least double the number to micro with), plus their low cost and Monster's pumpkin farms minimizing macro need, swarms of husks easily outmaneuver and out-base-trading any other army compositions.

While they do trade poorly resource-wise during fight against higher tech units, as long as the Monster player micro to split troops instead of bumping into AOE units, it takes longer to chase and kill one than producing new ones, effectively pinning the opponent in base.

I found this strat almost invincible on maps with a clear access to enemy neutral (with no tight choke points or a lot of rivers to wall in against), especially after the zombie and skele cost buff, as there's almost no opening for other players to exploit. It's Monster players' power spike across the entire game, since they have most efficient low tech units to start then end the game with a smooth transition and a T1.5 tech.

This is a Github issues page meant for code bugs, not balance suggestions. I suggest you go to the discord server and chat there about it - we have a channel for strategy and balance suggestions.