Training wheels are useful tool for beginner cyclists, but not useful for advanced cyclists. Likewise, quantum ogres are a useful tool for beginner DMs, but not for seasoned DMs.
I hard disagree. Quantum baddies are useful no matter how seasoned a DM you are.
Quantum enemies are a technique you can use to help preserve the prep work you do as DM, and doubling the prep you do isn’t a mark of experience. Use it when appropriate, and avoid using when the story says you must.