But has the level of Asian basketball declined?

It's been a long time since I watched basketball, but I tuned in because Lee Hyun-jung was trending.
To be honest, I was rooting for a win, but I was shocked because both teams played so poorly.
The free throw success rate for both the Korean and Japanese players was under 50%, their fundamentals were a mess, and their teamwork was no different from a disorganized middle or high school team, which really surprised me..
Looking at their dribbling, they seemed better than their seniors because the pros before the 2010s were worse than amateurs, but even that didn't seem to mean much..
Why are they so bad??