I find it incredibly ironic that both of WoW's top 2 [TOP 2] cinematics go to both of the worst expansions. Not only that but both WoD and BfA were incredibly hyped up. It seems when Blizzard and other companies build on hype it blinds their communities to a coming failure. I have seen this happen numerous numerous times. Even aside from video games. WOTLK, Legion, MoP, BC, and WoW, all were advertised yes but not as much as the former two. WOTLK is critically considered the best expansion amongst most people with either MoP or Legion being the best by the other % followed by one of those three expansions being the second best in 95% of cases. Now let's look at Shadowlands. It's cinematic wasn't too much critically claimed at all. People berated and lectured Blizzard on Sylvanas' powers against the Lich King. They praised the art and detail as of course as well as both actor's performance. [Patty never fails].
With advertisement even with COVID-19 in effect, it has been on the same level as the other expansions unlike WoD and BFA. No shiny cinematics like the Old Soldier for its Prepatch* [as of 10-20-20] or TV advertisements. There is no backlashing against feedback like with Blizzard banning/suspending people on their forums and snapping back at people on Twitter during WoD beta. In fact, this is the lowest i've ever seen for an expansion yet as far as hype. Shadowlands is looking pretty good in prepatch. Classes need some work but the gameplay is fine and the story so far is good and on a linear path unlike BFA and WoD.
Both are the most viewed videos on the Warcraft YT channel.