Mine is still intact I don't troll, but I have false first and last name in the profile. I have this account for almost 5 years.
There are some groups on Facebook. You don't need to know anybody to be in some group about sport. You can read other people posts not knowing them.
Why is removal of 500+ millions of accounts not shown on this graph? https://www.statista.com/statistics/264810/number-of-monthly-active-facebook-users-worldwide/