Don't forget that along with the elimination of XP earning on non-SkyTeam airline partners, the changes in April 2024 will also drop the Elite Bonus contribution from non-SkyTeam airline parter Miles earning.

For SkyTeam airlines (not AF/KL) the Miles are determined by:

Miles = (Distance x Booking Class earning %) + (Distance x Elite Bonus earning %)

but from April 2024 for non-SkyTeam airline partners (that will at some point in time include EY unless they join SkyTeam before then!) the Miles will be given from this:

Miles = (Distance x Booking Class earning %)

So the FB Miles from an EY flight (unless with an AF codeshare number) will be further reduced.