I guess? It is my experience no one fears towers in Dota 2 beyond the starting phase and they are easy to "fool". Hell it maybe an issue that depending on the situation, a player doesn't even fear the enemy fountain which is the most powerful "tower" in on the map.
In fact "back door protection" and "invulnerability" are artificial and are the primary rules forcing teams to clear towers in an order where some teams would skip the outer towers if they were not required. Reliable gold is nice but why bother if the team can just push to high ground and cripple opponents or end the game early?