To put it bluntly, Son Heung-min is to football what Ryu Hyun-jin is to baseball (but much greater)

Was there anyone criticizing Ryu Hyun-jin for participating in the WBC?
He was selected because, at that time, there were no active pitchers performing at his level.
Ryu Hyun-jin pitched reasonably well against Taiwan, even if he wasn't quite as dominant as he used to be.
But was he really that heavily criticized?
Similarly, if Son Heung-min were gone, is there any player in the football world who could perform at his level?
If there is, please name them—specifically in Son Heung-min's position.