Main issue is rapid clearing of weeds make it hell for harassers to well harass. These days everyone just sits on windows as they dont loss the weeds, yet. Also because marines are lazy.
Ethier make the weeds grow stupid rapid or revert the weed change. Yes it sucks to clear all the weeds but currently the easy weed removals help make metarushes easier as they rapidly clear are, makes harassing harder as weeds are very easily cleared, puts more pressure for drones which weakens the xeno force as a whole drones aren't the best fighters.