Oof.

There was a time when this was Blizzard's most heavily ratioed YouTube video:

But time is a relentless bitch, and a new contender for Blizzard's worst ratio has now emerged:

Ouch.

First, I want to say a few kind things about the devs (actually, dungeon designers) who are being roasted alive for their D4 gameplay skills as a result of this ill-conceived marketing stunt.

1. Putting yourself out in public like this is hard. For most people, the thought of speaking or performing in front of a large audience is terrifying, even paralyzing, and the audience of D4 fans numbers in the millions. To be willing to do this at all takes guts, and my hat is off to both Dini McMurry and Josey Meyer for being game enough to even try it.
2. Playing a fast-paced game while holding a conversation about anything other than what's happening in the game is also hard. Lots of people want to be video-game streamers these days; very few of them are any good at it. Neither McMurry nor Meyer are regular Twitch streamers that I know of, so the fact that they were able to play the game at all while talking about the architectural design of the area they were playing through is commendable.
3. Their lackluster gameplay performance aside, McMurry and Meyer actually did all right here. The assignment was to be as charming as possible, while discussing the process of designing D4's dungeons, while also playing D4, and they manged to do all of those things. 

Under most normal circumstances, this sort of marketing media fluff piece would have been utterly unremarkable. D4, however, is not in a normal place, so the reaction has predictably been negative. Those D4 players who were already inclined to believe that D4's devs never played their own game found lots of ammunition for that line of argument in one convenient package here.

Most of the takes that I've seen have been more critical of Blizzard's marketing team for being so utterly tone-deaf as to release this video into the current climate, than they were of McMurry and Meyer themselves. Asmongold noted that he thought senior members of the design team should be able to play the game proficiently, but directed most of his ire at the marketing team, whose decision to release this video at this time he described as irresponsible.

For the most part, I agree with Asmongold's take here, but I feel like it rather misses the single biggest point. 

Compare the ratios of these two videos.

Diablo Immortal:    Diablo IV:

Yes, D4's ratio (49:1) is worse than Immortal's ratio (23.5:1). But the bigger takeaway is that 833K people cared enough about Diablo Immortal to give it a thumbs-up or thumbs-down. For the Diablo IV, less than three months after its heavily marketed launch, that total is only 50K.

Of course, this does mean that 50K people still care enough about D4 to send a message to Blizzard about this video, but according to Blizzard, D4 sold more copies, faster, than any other game they've ever released. There are millions of D4 customers, and almost none of them appear to give a shit about the game any more. Of the few that are left, almost all of them disapprove of what Blizzard is currently doing.

This, my friends, is what apathy looks like. And for a live service game, nothing is as lethal as apathy.

I stand by my earlier statement on the subject. Diablo IV is definitely dead. It just hasn't stopped moving yet.