Alliance has outnumbered horde in BFA zones by 2:1 since Tuesday. Alliance PvP'ers heeded the call and Horde PvE'ers turned off WM (as intended) since it was no longer a very efficient risk-free bonus.
Even now as we speak, just prior to prime raid times (at release of new raid) AOO custom PvP groups are countless in number in Alliance LFG.
This was excellent!