You keep ignoring the fact that these people paid significant amounts of money to be there. And additionally, these are die-hard PC gamers. They didn’t come for a mobile game announcement.
To quote from another comment I read:
"There is a reason there is a Blizzcon, and not an EACon or an Ubicon. There are only a handful of corporate entities in gaming that represent something that gamers support and idealize the way they do Blizzard. It’s really only Blizzard, [maybe] Rockstar and Nintendo that inspire these kind of fandoms among big corporate entities.
Blizzard inspires that fandom because everything Blizzard releases has been great. And if it isn’t great, they don’t release it. They have cancelled games like Warcraft: Lord of the Clans and Starcraft: Ghost that have been announced, have been shown to fans and appeared to be very deep in development, because they didn’t meet Blizzard’s extremely high standards.
Most other studios would have pushed those games out the door to recoup losses, but Blizzard killed them and ate the development costs, because they valued their reputation and fans’ trust more than they valued the short-term benefits of releasing mediocre games. These are the values that Blizzard has staked its reputation on, and this is why thousands of fans will travel from around the world to attend Blizzcon.
And frankly, it takes a massive screwup, a colossal disappointment for the fans at Blizzcon to turn hostile to Blizzard. But this will do it. Blizzard is partnering with a maker of mobile Diablo knockoffs to make a branded mobile Diablo knockoffs. And the result is mediocre. So Blizzard is now prepared to slap its labels on mediocrity, which signifies they’re taking the kind of short-term cash-in that they never would have gone for in the past, and they’re abandoning the values that inspired the kind of loyalty they’ve enjoyed. In short, Blizzard has finally been subsumed by Activision. And none of the people in that audience would have showed up for ActivisionCon.
Fans objected to this in the room where it was announced, they’re objecting by disliking the YouTube trailer, and they’ll object by not buying this game. And they’re right to object…
These fans are upset because a company which has commanded loyalty by maintaining an extraordinary commitment to quality is releasing a piece of shit mobile game for a quick cash-in. Nobody objects to Blizzard expanding its tent; Diablo 3 is extremely friendly to newcomers and easy to pick up, and so are Hearthstone or Overwatch. The problem is that Blizzard is slapping its name on third party garbage, and it’s a betrayal of everything they used to stand for and an abandonment of everything fans have been loyal to."
Blizzard touted this year as “a good year to be a diablo fan” on their website and gave the Diablo brand the first talk right behind the opening. People thought there would be a remaster Diablo 2 or a new class for 3 (druid). That’s all. No one was asking for a full game, most people knew better. But a watered down, imprecise phone game that has thousands of clones on phones already…? The worst sort of blindsiding.
This whole thing is a PR nightmare and an obvious “whoopsie” for Blizzard. It’s not the end of the world and I’m sure they’ll learn from it no problem. They woefully misunderstood their audience and what people expect from a Blizzcon and I don’t think they’ll make this mistake again.
Also…
" However, two people familiar with Blizzard’s plans confirmed that the company had indeed recorded a video in which co-founder Allen Adham spoke to fans about a new Diablo project. What’s in dispute here is the timing. We had originally reported that it was planned for BlizzCon, but it’s possible that those plans were simply discussed and never solidified. (Either way, the video never came out.) We can confirm that Diablo 4 is indeed in development. One of those sources told me that the Diablo team wasn’t yet ready to commit to an announcement, as Diablo 4 has changed drastically over the past four years and may continue to change further. (We’ve heard it’s gone through at least two different iterations under different directors.)"