I think what you're missing is that many of us don't have a Scout button.
In your video, the sequence is:
Click the kingdom, select Explore, click the Explore button, click SCOUT, and it shows you the enemy team.
Anybody that VIP 3 or above clicks the Explore button and INSTANTLY sees the enemy team. There is no Scout button. It's not that it's free and they still click on it. It's not there at all.