The theology of the arguments are above my pay grade because:
The rules of the airlines states that you need to pay for a ticket. It also states that you should not sell your miles.
By law, you need to pay for a ticket. But the difference is class (or class within a class of service), is this the law, or airline t&c?
Respecting the t&c is for me impossible, as they are doing such weird twists, that I have a hard time respecting them.