I don’t know if anyone said “silly us” did they?
I thought they said “here’s the reason we picked those values” referenced a Japanese handicapping system, and pointed out it been like that longer than someone could boot up Katago and claim that komi is wrong without really having a good idea why it’s wrong.
Similarly, I believe the reason not to change it so far is to change it for a good reason, backed by data, so that in future it doesn’t have to be changed again. Also to change the whole small board handicap system at the same as changing the non handicap one.