Nobody said it didn't happen. Nobody said there aren't any exits in the aft galley.
Most of us here knows that there are exits in the aft galley. We also know that most exits aren't in the rear galley. We also know that there aren't enough seats in the rear galley for "most of them" to sit there during TO and landing, hence the lawn chair remark. We also know that "most of them" aren't "texting or face booking" during TO and landing.
You know this too, as you apparently have been cabin crew, which doesn't improve the quality of your post(s).
But at least you modified your claim, which is something I guess.