Yeah if you're pessimistic about it, it can seem like hypocrisy. Or you can try to believe that people really can put a dispute behind them and move on. Plus, it wasn't just his death that motivated people to start acting like they had always liked him. They were working on getting past all the problems long before he passed away, leading up to getting him involved in WM weekend. Hatchets were buried and new contracts were signed all without the fact that he was going to pass away 2 days later being known to anybody. That actually makes everyone's willingness to heal things up with him seem more honest. Had we never seen Warrior again, find out he died, and then everyone started acting nice about him, yeah, that would seem sketchy. That's generally how the human race works, every time somebody dies all you ever hear about is how great they were. Apparently a bad person has never died if you listen to how dead people are universally praised. But in this case, peoples attitudes towards the man were changing before he passed. I think that's a sign that it wasn't dishonest.
The saying goes that hate isn't the opposite of love, indifference is. Sometimes the people you like the most on one hand are the easiest to hate. Obviously Warrior must have mattered to the WWE all along for them to even bother putting out a trash talking DVD about him in 2005 long after most people had forgotten about him. Had Warrior really been a piece of garbage that nobody cared about, Vince and co would have just been indifferent and we'd never hear him spoken of again. The fact that they released a DVD purposely to bury someone, especially so long since the last time anyone had seen him anyway, is pretty strange. It comes across about as well as talking trash about some ex that you haven't dated for ten years. It pretty much telegraphs the fact that you are still thinking about the person and aren't as over it as you're trying to appear. If you were really over what someone had done to you ten years ago, you wouldn't be releasing a DVD about it. So on some level I think Vince/Linda/somebody always wanted him back in the fold, and even though the DVD seemed mostly to be attacking Warrior, it could also be seen as a subconscious effort to keep the discussion going and not just let the issue be forgotten, thus spurring on the debate and hopefully leading to something that would bring Warrior back around. Like poking somebody until they finally have to acknowledge you.
So yes, for the most part they probably will act like that DVD never existed. Sometimes life just works that way. When an effort is made to heal a relationship, you don't keep bringing up things that were said and done while the rift was still occurring. A decision has been made to move forward. You don't reestablish a friendship with someone or start dating someone again just to say "hey, remember that rant I posted online about how horrible you were?". The DVD is in the past, clearly Vince and others in the company had always been pissed about what happened with Warrior and wanted to make some money off of telling the story, especially their side of the story. Hopefully they don't feel too proud about some of the decisions they made with that release, just like Warrior probably felt embarrassed about some of the stuff that came out of his mouth over the years. There's no way to erase the past.
Of course the opportunity to be cynical about it remains, I would assume certain things were signed that now WWE can start selling Warrior branded stuff again, so of course they are going to act like they always loved the guy, and now make money off of selling his stuff again.
Ultimately it would have been a lot worse if the guy had just died and then suddenly we see a change in attitudes and he gets tossed into the HoF after the fact and they act like bad things were never said. But most of it was handled while the guy was alive, which is a much more positive thing. People actually had to make eye contact and shake hands rather than one half of the situation passing away and the others being able to manipulate everyone and pretend there was never a problem.