what is your point? they don't need a Mac Pro with Intel Xeon processors to run Logic Pro or Garage Band, or a myriad of other programs, they can use i7-i9, even i3s. You do know that intel sells Xeon's at uber prices for people who want the ECC memory and 24/7 high utilization. If you think that is a crock, google it, and check prices for HP and Dell systems , or off brand workstation providers running latest Xeon.
So seriously, are you trying to say that someone who makes music, but is not a pro needs an expensive 24/7 high utilization computer to make music? No, No, No