We've got tons of those here in the US. Known as a TAA (Terminal Arrival Area)- the're used to negate the need for procedure turns. As the
link shows, the course change at the IF is 90 degrees, which is typical.
I'd imagine the recommendation is there to prevent an overshoot, but as you can see, you have 6nm fromm the IF (TUKSE) to the FAF (JONTU). More than enough room to get settled.