Plus points makes it worth it. Now that things are reopening I’ve planned several euro trips this year, and been able to buy economy and upgrade to business with plus points on all the long haul segments for both me and my family. Every long haul flight I’ve booked has been PZ9, so it clears immediately. Very easy and very worth it (especially since regular fare business class has been ridiculously high on those same flights lately from what I’ve seen)