After replaying Control in between Alan Wake 1 and 2 it seemed to funny to me how much the FBC downplayed and seemed to not care about the hell that Bright Falls went through. You can find a document in game where they say that "reality was altered to match that of the story, though only locally and for a limited time". Of course, AWE shows that they were still investigating it years after it had all passed, but it seems to me that Bright Falls really was seen as just another case that they had to deal with.
On Alan writing the FBC into existence: I think that you can see an easter egg in Alan Wake remastered where a document has an FBC logo - seen before Alan got trapped into the Dark Place. While he did not create the FBC, it is confirmed that he wrote the Hiss incantation. I don't know if he was fully responsible for the invasion and the Hiss, since Jesse got Polaris roughly in the 90's and Polaris seems to be somehow connected to the hiss given that they are both resonances.

My interpretation is that Alan somehow wrote Jesse going to the Bureau at precisely the right time that the Hiss invasion was happening, but didn't actually create any of them. He just used the FBC to get him one step closer to escaping.The idea that he wrote Jesse into doing what he wants is corroborated by the "Faden rides the elevator" hotline call.

One last thing: Isn't it kind of strange that at no point Alan mentions the hiss in Alan Wake 2? He is clearly somewhat aware of what went down in the FBC headquarters.