The only thing I can think of is a possible glitch in the system? The Power Seller page says that eBay automatically sends out invitations to qualified sellers each month. These are probably computer-generated invitations, so maybe a few people who aren't qualified slip under the radar? Likewise, I see some artists who I'm sure must be meeting the $1000 a month in qualifying sales, that DON'T have Power Seller status, so maybe that system is full of glitches too. (I know, go figure).
I guess it just really frustrated me, because I spent all day packaging up knic-knacs that I sold for very little money on my main ID. For all the years, the thousands of transactions I've done, and here some total flake managed to become a Power Seller with way worse stats than I have. Not being a professional ebayer, I've never felt any burning need to reach Power Seller level, but . . . just sayin.