This is also why I have never considered the Switch a portable system. It was a hybrid that was never quite a "real" console or a handheld, and thus made compromises on both ends. I personally never used the Switch undocked, I'd have rather they sold a fixed model with no screen or joycons that just plugged in.

The real reason that Game Gear was so power hungry is that it was just a Sega Master System crammed into a handheld. This is why it felt wildly better and more advanced then the Game Boy. Sega did the same thing years later with the Sega Nomad aka a Genesis crammed into a handheld.