Of course Command, the new version, will sometimes involve the impacted foe fleeing into something that does serious damage to them. The game is FULL of movement manipulation effects which are much stronger than a simple Command to flee now anyway. I mean, your barbarian can have a weapon mastery to push a foe into a wall of fire or off a cliff pretty easily too. Yes, forced movement is a meaningful thing in the game and Command is intended to have some forced movement options in it which will, like most forced movement, combine with other spells and terrain to cause a lot of damage. That's working as intended.