Yeah, those things were you spend extra energy and unlock it for a minimal amount of treasure? Those things that nobody ever uses? Yeah.
I guess not every content addition is meant to be used. You might check out what's behind the gate once, but then you'll never touch it again.
Jelly farm 2 energy turrets. You'll only activate them once to watch them do their thing.
At least you get heat and crowns from this.
If 3CE = ~180 crowns, then sometimes gates with at least 2 red boxes could be worth it. Depends who you ask.