Well, they have nothing to do with it. However I'm not happy about it at all. I really don't agree with the hate they get at all. They delivered to us many years of great Trek, even if you think later on their efforts wer sub-par. Personally I enjoyed even Enterprise in it's early years (though I'm not blind to it's problems).
That's a matter of personal opinion, of course. I will agree that Berman taking over from Roddenberry saved TNG and kept the franchise going. We wouldn't have had DS9 without him. Then again, I neither liked VOY nor the early years of ENT all that much.
I recommend taking a look at "Chaos on the Bridge", a documentary about the early years of TNG by Bill Shatner. If even half of the things said there are true, it's a miracle the show even survived its first year, or that the show even got off the ground.
I thought 4th season of Enterprise was still pretty bad (suffered from cramming in too many references to the other series, and the penultimate episode with that xenophobic human speciesist was a ridiculous example of excessive pc), only episodes I liked were those set in the mirror universe, they were fun in a cheesy way.
Fair enough. Season 4 certainly had its fair share of flaws, but also some pretty good episodes (the Vulcan trilogy, or the episodes about the Romulan efforts to destablilize the entire region of space). Me, I liked the fact that ENT had finally moved away from the Temporal Cold War and toward the founding of the Federation. That's just my opinion, of course, but at that point it finally started feeling like Trek to me. And "Terra Prime" was a pretty decent series finale, IMO. Certainly better than "These are the Voyages". Another thing I blame Berman and Braga for.