Maybe so, but at least that obstruction isn't designed in by the manufacturers.
I don't fancy the chances of anyone escaping from an uncontrolled ditching if they're in the rear half of that cabin. You can't expect multiple passengers to be simultaneously removing seats from their housing to facilitate their escape. That would be hard enough if it was warm, dry, the right way up and well lit. But it won't be, it'll be the opposite. They really need to address this with a seat re-design before tragedy strikes.