Not sure why or how anyone could reasonably expect any of EA Sports Ultimate Team modes to change their entire economies mid-stream in response to another unrelated game's
PR problems. These in-game promotional events are planned out weeks and months in advance, changing course mid-stream is nearly impossible.
Generally, the balance between gameplay grind and pay walls with respect to access to content is an industry-wide issue. EA is certainly participant in this problem and certainly criticize them for it, but it's hardly exclusive to them alone. Overwatch, Shadow Of War, Forza Motorsport 7, NBA 2K18, and Call Of Duty: WWII immediately come to mind as other games pushing the micro transaction driven economy in AAA games; Battlefront II is merely the latest poster child.