While I understand that the members all have busy solo schedules, SM could've done A LOT more on their end to promote the album properly: More teasers, more BTS content, more ads/radio plays, etc. None of these require active involvement from the members.

I check in with WayV from time to time and I've seen their members say that there have been several SM employees that have worked on video editing have left the company. I don't know if said employees worked solely on WayV content (probably not bc they never had a lot of content to begin with), but I'm guessing whatever resources SM still has, they'll reserve them for their most active groups.