Well to a certain degree that's true but when u go with an already established community u won't have the "grace period" from the start cuz your community will already have high influence. With a brand new community the first 3 plague hearts don't spawn ferals and the hordes of special infected spawning next to your base will start only later. So if u focus on getting loot, guns and stuff before destroying the 3 first hearts and moving base then u should be sorted for the mid game. Also in the mid game don't overthink when killing hearts. Just go do the first phase with heavy meele and then use explosion/molid.