I think you totally misread the motivational factors here. That guy (aka Tumbledore) could easily want to lie to bolster the justification for the indignation he obviously feels. Meaghan, OTOH, has many more reasons not to want to lie, foremost of which is that she is representing an entire actual company. Tumbledore has nothing to lose and everything to gain, since all that's at stake here is his internet "personal brand", for which notoriety is the stock-in-trade.

UPDATE: sh4na is correct that I misinterpreted "that guy" to mean Tumbledore, not Ryan of Pitchfork. The 10 minutes vs. 72 hours discrepancy is significant, but to presume that Ms. O'Connell is lying over-reaches. That is, unless one presumes that she's personally conducted an investigation of the support staff's emails and the account management history in order to satisfy the ego of an entitled netbrat, and is now knowingly misrepresenting the true facts of this very important matter.