One commenter below the OC story describes how he has used the PP/EventBrite combination successfully and comfortably for a couple years. That's great for him (for now).
The problem is the unpredictability of how PP may treat any customer in the future, without regard for their past performance/association with PP (as in the OC case).
Personally, given the number of (unresolved/unexplained) horror stories I have heard with PP, I would not advise anyone (ANYone) to risk any business connection with PP (beyond what they are perfectly happy to lose) - no more than I advise people to take their retirement funds to a casino.