It's really amazing how patient the fans HAVE been. He lost the title, fans got excited for the Authority storyline. He lost it after Night of Champions, that's okay, he'll get his in the end. Got screwed over by Shawn in the Cell, it's okay, too soon to put the title on him. Got depushed in favor of the Big Show, that sucks but he needs to win the belt at 'Mania. Feuds with the Wyatts, it's a big elaborate work to piss off the fans and get them behind Bryan even more, he's winning the Rumble anyway... Then Batista wins the Rumble...
The whole thing was about how there's this big carrot at the end of the stick called "The Babyface Will Eventually Get His" and we all thought it would be when fans wanted it most - at the Royal Rumble. Since he didn't win it... when's he gonna get it? They've really gotta answer this. This is the best, most well-done storyline in a long time, and it seems like they had no plans on paying it off. That's why the fans are so pissed off... that and the whole "WWE won't listen to us" thing.
I doubt Dave is being pushed for Triple H's reasons, more "He's in a Marvel movie and was a big star from the past" reasons, in that order, but it's easy to tell why the fans aren't buying it. He comes across completely apathetic, his mic work has been appalling and was completely gassed doing fuck-all in the Royal Rumble in 2014 when fans are clamoring for a new era with new stars and WWE gives us yet another dude who was on top in 2005. Watched the Rumble with my best friend who was a huge Dave mark and even he was pissed that Batista won after being teased with an even bigger badass who was new and infinitely cooler in Roman Reigns.
Lots of it also is lack of faith in Creative. Kofi Kingston in 2009, looked like he was on the fast track to the main events and everyone loved it until he was too "stupid, fucking stupid". The Miz in 2010 looked like the shining heel they could want in this era who everyone could hate, who had all the charisma in the world, but then they fed him to Cena and he's been nothing ever since. Del Rio could have capitalized and became a pretty big star right off the bat... how long it would have lasted, who knows... but ever since they put it off and put it off and finally gave him the belt later, nobody cared. Remember how over Ryback was in 2012 before he lsot his aura feuding with the Shield and then turned heel for no reason at all and has been the gum under your shoe since? And don't even get me started on Dolph Ziggler in 2013, incredible just how far he's went from "insanely over" to "not a single person can possibly care". Why should we believe WWE will go all the way with Bryan?