That's my feeling too. It's plausible that Dell outsourced the entertainment to a local Danish agency of some sort, and that to Dell it just looked like "Mads something, some Danish comedian". Although Mads Christensen is vaguely notorious in Denmark (for multiple things), afaict this is the first incident that actually made the English-language media, so you'd have to read Danish (or ask someone) to know who he was previously. Though whoever in Denmark recommended/booked him certainly knew who they were booking. Possibly Dell should've exercised a bit more control over the program. Definitely should've reacted more emphatically, though it's not too late to say something now.