Based on the graph it looks like the hearing test only tests out to 8 kHz. That's disappointing. That's also the limit at most audiologists offices. It would be nice to have a good test that goes farther.
Audiologists don't seem to care about your high-frequency hearing.
They’re mostly focused on where speech and everyday important sounds (car that’s about to run you over, fire alarm, doorbell, etc) are right?
Of course, the "important sounds" are mostly below 8 kHz, but I think they're missing out by not looking at higher-frequency sound sensitivity, since that's the first thing you lose.