Here's the actual chart that's much more useful. Been recommending that new to audio people look at that for a long time. Definitely well put together
Interactive Frequency Chart - Independent Recording Network
With that being said, there is still A LOT of information from 5k and up. Do you think any monitor/bookshelf or tower would be as popular as it is if it only went to 5kHz? I understand what you're ultimately getting at....but it's still not acceptable. At this point, my SPL meter is the only thing I haven't changed