In the last week and a half, I've had three reputation decreases of 10 points each due to "User was removed." I understand why this happened; in three cases, users deleted their accounts (or were banned) and the reputation gain I saw from their upvotes on my answers was rolled back. I am fine with this policy.
The recent frequency of these events does strike me as unusual, though. I've been around MSE at varying levels of participation for a while. I'm not tremendously active right now; I will usually answer 0-2 questions per day when I have time. I've seen this kind of reputation decrease before, but never three times in rapid succession.
My question is: Are more users deleting their accounts / getting banned right now than usual? I'm aware of a typical influx of questions at the beginning of academic years, for instance; perhaps this is known to coincide with that? Or maybe I just experienced a low-probability event.
Edit: There has now been a fourth instance of this in about 10 days! Very interesting.