Earlier quoted context omitted.
They hardly insist -- you can just get an adaptor to lightning if you'd prefer, which isn't much compared to the price of the iPad.
That's yet another stupid adapter you have to take with you everywhere. Even though I personally use wireless headphones, I wouldn't want to buy something new when _already_ getting a new phone or whatever.
Not willing to go wireless as I use both for music making and wireless latency and compression is unacceptable. On phones I kind of understand it but IMO the iPad Pro not having a headphone socket is not excusable, there must be a way to fit it in.