Most of the musical instruments we play today are modernized versions of instruments that have been around for centuries. Whether this author's statements are to any degree accurate or not, the idea that the pipes have been changed over time is not remarkably surprising.

I know we as humans find it easy to latch onto romanticised ideas about whatever things we identify with; and it's easy for us to get out of whack at the idea of someone challenging that which we identify with so closely. Nonetheless, this stuff changes.