But that isn't what the writers did. There is a huge difference between "letting viewers figure some stuff out" and forcing viewers to make up their own theories out of whole cloth because the writers couldn't figure it out on their own. It's like displaying a blank canvas in a modern art museum. Sure, you'll find plenty of people who will say it's "brilliant", but the fact remains that it's an uninspired piece of crap.
I was very surprised at how completely unclever the series finale was.
That’s exactly what the writers did. They gave a bunch of info about how the Island behaves, how long it’s been around, and some important physical properties. But they didn’t get into how it got that way and why because that’s the territory of midichlorians, and that never goes well.
I’m glad the series finally wasn’t clever. “Clever” is usually just dopey.