I staunchly disagree with this. If a government actually cared about power consumption, they would subsidize the development of better X86 to arm translation layers so we can move to more power efficient processors.
There's actually a lot we could do in order to reduce our energy consumption.
Another step I would take is completely outlawing the sale of advertisements to data brokers. There are so many resources that go to pumping out advertisements from servers, and it really just is not beneficial to anybody except for the companies.
I know this would not be popular among a lot of developers, but for certain applications, I would also curb planned obsolescence by creating a minimum viable processor and graphics requirement for certain applications. A lot of the times, the kinds of applications we use just don't need as much power as they're guzzling We need to end the feature creep.