It's not Bendis' fault. There's this thing about writing The X-Men that turns an otherwise decent writer into an incomprehensible mess. Back in the day Chris Claremont was even a decent writer and after writing X-Men for so long it messed that poor man up for life. It's like possessing the "one ring" of power. Writing The X-Men is all pretty and shiny on the outside, and it pays for your new house, maybe a car, but eventually you're gonna find yourself eating rancid fish heads, choking on your own phlegm and skulking around muttering random, barely comprehensible bullshit like "Cyclops is bad guy my precious," and "Wolverine creates the first X'mens team, yes it does." It's a good thing that Fraction got out when he did, but he did give us "Fear Itself."
... or maybe it's just the fact that the dude's workload has increased logarithmic-ally in the past few years.