It is kinda like facebook. When you close your account it just flips a switch in the database to not show your profile. Your posts and all your data remain. They can easily turn your account back on like nothing happened.
Yes, I had closed an account out several years ago, but looked for an older question where I had found myself involved in it, and was shocked to find that my account had around 200 more lurve from when I first closed that account out.