First of all, I consider that the community should calm down and give the devs time to adjust, remember that the BP does not expire and therefore must be adjusted well and that is difficult, if it is relatively fast a very active player would finish it very quickly.
In my opinion Apex implemented a smart way, the first hours of the week that you play you will go faster and then it will decrease, this makes players who do not have much time go at a good speed and that very active players do not burn the content, based on the system they already have, it may be that the first weekly challenges grant more XP and then normalize until the next week