While I share your frustration with domain squatters, and the such, it's worth noting that you ought to read between the lines with your vociferation.
His account "celtics" was being used for fans to check stats and news on the basketball team. I wouldn't call that no activity. I have the same kind of account on Tumblr for the Indianapolis Colts; pictures I take when I'm at football games or interesting news clips. It's not a dormant account. So on that note, saying "no activity" isn't correct, he was apparently doing something with the accounts.
His account "celtics" was being used for fans to check stats and news on the basketball team. I wouldn't call that no activity. I have the same kind of account on Tumblr for the Indianapolis Colts; pictures I take when I'm at football games or interesting news clips. It's not a dormant account. So on that note, saying "no activity" isn't correct, he was apparently doing something with the accounts.