I read that article and while I understand what he is saying I can't believe it causes more then a 1-5% increase in battery usage.
So don't turn on Low Power Mode.
And I'm sorry comparing fetching of twitter posts every 2 seconds
That doesn't happen. While in the foreground, modern Twitter clients use a persistent connection to stream posts. While in the background, updates are infrequent.
to changing the hue of the screen is a terrible comparison....one requires reaching out over your cell or wifi network every 2 seconds while the other should be a relatively simple on device change...
What it comes down to is the question of who's more qualified to judge what's appropriate for Low Power Mode: Sir/Madam Random MacRumors Poster, or Apple Inc.?