If I click on the "Delete your account" link in my account, will that instantly delete my entire account?

try it, then let us know what happens.

You get a confirmation page first.

You will almost certainly get a warning or comfirmation request. But I will not be held responsible if you don’t.

You get a warning. Trust me, I have deleted this one.

Yes you’ll get a warning. But I think it’s also possible to reactivate the account later. Someone please correct me if I’m wrong on that.

I deleted mine last summer. This happened.

Andrew offered to turn it back on. So it doesn’t delete your stuff. It just marks it as “not visible.”