Asus is enjoying a long time of good reputation now to turning out below competition level products. Judging by what I see on newegg they are still selling huge amounts while turning out less then stellar products. Im suspecting there margins are alot higher while still selling huge volume. Using there previous good rep, reducing cost on components, and getting nice bigger margins while all keeping volume up.
Same thing with z390 boards when they where caught cheaping out on phases and trying to market around it. Or the TUF 5700xt which was a terrible card.
Even when reviewers keep pointing out the massive flaws in ASUS products, people keep buying them in droves.