Are Noxxix guides reliable?

I like this for the same reasons. They also state who the main contributors are for each specialization with a brief overview of what their contributions are (raiding/theorycrafting/etc). It is also less inundated with irrelevant and annoying ads. And they don’t just say: “use X” but say “X is better for AoE”, “Y is good for general solo play”, etc.

Last time I looked at Noxxic, which was a long time ago, I could tell at a glance that their information was really bad.