I suspect since it hasn't gone into effect yet people are still playing the game as normal, some hoping they change their mind, some not realizing it's even happening and some getting the last bit of the game before quitting.
Once it goes into effect, that's when the dive will happen.
A lot of people linked their PSN account in the early few days while it was integrated before it was taken down (it stopped working like most things under the extreme network stress). I know my entire static did. We had ps4s in college.