If I recall correctly BTS had never been able to win any awards in America except maybe Nickelodeon Kids Choice Awards (is that still a thing?).
It looks like after Parasite won the Emmy for Movie of the Year Hollywood felt more comfortable giving BTS a major award in a music category.
There's no way BTS is better than Beyonce. But Hollywood wants that money and revenue the Korean Wave is bringing in so that's probably why they finally caved and acknowledged BTS as a somewhat competent artist.
No Parasite = No BTS