The link from Apple's support page redirects to the Mac App Store but upon clicking download you're met with an error message saying you "This version of OS X can't be installed on the computer" 
Note: I've tried 4 different MacBook Pro TouchBar but none will download it. 
I'm only looking to download El Capitan so I can create a USB installer for an older Mac. 
[![Download Error][1]][1]


  [1]: https://i.sstatic.net/QVuuo.png