People use the tools they have access to, and some things are more important than worrying about using a platform that works because tool's owner's business model or actions are bad.

If they'd endured as independent groups into the 21st century without being colonised by Europeans, as the map shows, they would almost certainly have developed defined borders.

The Aztec empire being the dominant force on the continent could be a very unfortunate situation for everyone living there.

They were so unpopular with every surrounding nation (because of all the murdering and kidnapping and human sacrificing) that when the Spanish showed up, the vast vast majority of the soldiers that fought against the Aztecs were from the local peoples.

I know undervolting can make some electronics, including lightbulbs last longer, but I don't know if that would countermand the extra wear from the changing voltage.

Some older wiring and devices can interact poorly and cause fluctuating voltages. The more stable the voltage, the less wear on the components and vice versa.

Sadly, the design is unfeasible as eventually the rotational force either separates the bread from the butter, or liquidises the internal organs of the cat when they reach peak generating speed.

The rapid disassembly of the mechanism can cause quite an amount of damage as well.

Researchers need to afford to live, and that money comes from research grants. If this was even a problem, which it isn't, the root cause is capitalism.