In my experience, the PT fans love the SE, because they shoehorn PT elements into the classic films and are part of Lucas’ “Artistic Vision” or whatever they use to justify stupid shit like R2’s rock and Obi-Wan’s new call.

As for why the OOT hasn’t been released, I have a couple ideas. Keep in mind until Kennedy says anything on the matter, its still speculation.

Fox doesn’t want to. Fox and Disney are in a pissing contest over Fantastic Four and I’ve heard Fox is still kissing Lucas butt.
The restoration is taking a long time and they won’t announce it until its nearly complete. The negatives are in horrible condition and its possible they have to go to interpositives and other sources to create an acceptable OOT.
It doesn’t fit into their plans right now. There is no secret that their primary goal was setting up the new Trilogy. Now that TFA is a huge success and Star Wars is a movie powerhouse again, they can devote resources to other things. 2017 sounds like a good time. You have Rogue One in December 2016, the 40th Anniversary in May and Episode 8 in December '17. It would be great synergy to have the OOT in mid 2017 on home video and limited theater showings.