Problem might be they are very silent and blows exactly during service time. It could be different if it is continuous shouting and cheering.
Hayakawa needs to cool down abit.. And keep his anguishness aside.. He should let his good play speak and debate with the service judge and not his actions and animations.. Well this side of the court has some positive vibes along with the drift it seems.. JPN fights back now.. But ah another one from KH
Replays show that the faults were correctly called. BWF sent a clear message this time so hopefully players learn in future tournaments.
When the smashes keep coming back, the risk gets higher you may miss the next one or it comes back with interest.
if the rule is to serve below the chest level, the Japanese properly would have faulted a couple of times!