Why have so many of the old SW members left?

Im sure if you visit their pages, many are still here and active...but SW decides who sees what now, so for whatever reason they dont sharexsll pists withveveryone. Ive had a few conversations this week with friends i thought had left because i havent seen them post for weeks, and in visiting their pages i see they are here and posting....and they thought the same of me.
Its bonkers how they do it. Its ruined the site for me.