Made the time to catch this in one sitting last night; it was thoroughly enjoyable. Thanks to this thread, I went in knowing that it was going to Frey and Henley's perspective that would rule, so I was able to watch with skepticism.
I felt sorry for Felder, who pretty much came off as a nice guy (e.g., directly intervening to get Joe Walsh into rehab). Now, although the doc didn't mention this, right after Frey/Henley fired him, he sued them for tens of millions and the case settled out of court, so he's probably doing fine financially and he wasn't totally screwed over or anything.
As far as the firing, I thought Felder had a case. He had formed a corporation with Frey, Henley, and Meisner, and with Meisner gone, he thought he should get 1/3, the same share as Frey and Henley. In fact, I think he thought everyone should divide the profits from the reunion tour equally. Frey's angry position in response was entertaining but ridiculous. True, Henley and Frey were the main songwriters, but (as the doc glossed over) they were talking about tour revenues here, not songwriting royalties. And even in the songwriting department, Felder wrote the music for "Hotel California," which pretty much ends any discussion of whether he had a significant contribution to the group's music.
Frey was dooshy and Henley was smug, but neither came off as horrible human beings. I did find it ironic, though, that Frey belittled Felder's musical talent and ran Meisner off for not wanting to sing "Take It to the Limit" live . . . and Felder runs circles around Frey as a guitarist, and near the end, there was live footage of Frey just butchering the lead vocals on TITTL.
Good stuff, though. Showed how cutthroat the music business is and had some great musical footage in it.