That is more like a balance issue, they need to put a downside to such strong attacks, specially because they tend to be OHKO in certain situations, but still feels weird because its makes sense with a Pokémon locked in Outrage but with a recharging one? The Trainer is also paralyzed or what?That is Level 10 butt.
If you're Pokemon has to recharge from, say, a move like Frenzy Plant, YOU CANNOT DO ANYTHING.
You can't use items, switch, ect.
You're forced to be a sitting duck for an entire turn.
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Actually I had a battle with a guy who used all the elemental Hyper Beams against me, the attacks were really strong obviously but the recharging turns helped me to set up Dragon Dances and do a clean sweep. So I feel that Hyper Beam and its variants are for "emergency purposes"