Given that season 1 and season 2 were completely unrelated, there's no reason for it even to have been considered a TV series. US networks should do it more like the BBC. Have a series of four, six, ten episodes, whatever. Give it a name. When it 's done it's done. But they want to milk it for all they can. Make a name, drag it out for as long as it's profitable.
I didn't hate season 2 of True Detective as much as most people. Most people expected more of the season 1 vibe, with comic-book villains and a black & white good vs. evil theme that played down to the intelligence level of today's TV viewer.