I think the idea was to take a confession that's obviously no fun to talk about and which many people are very upset over and only likely to get more upset over now that it's confirmed and try to lighten the mood a little with some silliness. (And it WAS supposed to be silly.)

This is nothing new - they did the same sort of thing (not an interrogation, but the humor) when they had to announce the four cut classes. Heck, they do the same thing when they have to announce GOOD news, usually. This off-the-wall kind of humor is a facet of their way of being upfront and informal with the community, of approaching people with their defenses down - and while it looks like I'm in a minority judging by the general negative sentiment towards this game, I found it and find it endearing.