Not sure about Fear Inoculum yet. It's good but I can see why they took so long to release it. They ran out of material. Many of the riffs are re-used from older songs and there's so much filler that songs can go on for over 10 minutes with 50% of that being a repetitive tune. While listening to it I kept forgetting that I was listening and it became background music. It's also very soft compared to their older stuff. There are some power cords but it never really hits that high powered point. It constantly feels like they're building up to something but never getting there.
Still good though and it'll probably grow on me more. I didn't like 10,000 days until I heard it 4-5 times.