I'd actually be curious if it was none of the above, where Blizz is targeting the younger generations but it's actually the older generations who want the game.
More recently a survey came out about the demographic breakdown of fans of the MCU, and it showed the vast majority of the people who would call themselves MCU fans are actually in the older generations (even baby boomers were a really large portion). Smallest subsection of fans was the younger generation. The irony is that a lot of the social and political messaging that's been shoved into the MCU as of late targets the smallest subsection of fans they have. What's interesting to discuss is why. Are they trying to bring in the new generation at the expense of the older generation? Are they just pure idealogues who can't see past their own worldview? Are they somehow stupid and hate making more money, so they won't make content for their actual fans? While the answer gives important insight as to what they're actually thinking over at Marvel/Disney, they aren't the exclusive company to enact such practices.
I wouldn't be surprised if WoW falls into a similar issue where the game has been trending and designed toward a demographic that may not be the core fan base. Could end up being a self-fulfilling prophecy, where you 'weed out' your fanbase until the only ones left are the ones who align with your new ideals and design. Regardless, the ads themselves do have a veneer similar to a lot of advertising campaigns of major media outlets as of late, where you become antagonistic towards your established fans and attempt to pander to whom you wish were your fans but likely are not or never will be fans. This isn't to say Blizz specifically doesn't have people who care about the game and its direction, nor is it to say that all the criticisms came from actual fans or players. The problem is that the front face of Blizz (especially in light of their recent history) isn't in a position to attempt to be cheeky towards criticisms or joke about them... that's something you earn through your actions and established reputation. It's not a good idea to throw shade when you yourself are in such a weak position and have a poor reputation.