In my opinion APT. has ended KPop's heyday.
The cold fact that all the KPop songs crumbled like milk cartons on the onslaughter of Roseanne, Park, MBE, and Bruno Mars, which was not even the song he emphasized (he emphasized the collabo with Lady Gaga more), showed the real strength of KPop, which is near nil.
To end KPop it was not necessary to bring the best forces available against it.
Just a stroke of finger from Bruno Mars was enough.
With the weakness of Kpop completely exposed to the entire globe, I don't think no amount of effort from BTS and others will be enough to overturn its most important defeat of all.
Those who pray for BTS' return should be more realistic. At most it will return to its 2018 level, while more relevant singers to the newer generations will take the top, and even Stray Kids might sell better.
Basically APT. became the Emperor's New Clothes moment for KPop.