I think part of that is the "nobody got fired for buying IBM/Cisco/etc". You're somewhat more insulated from accusations of cringe or racism because you can't

I think part of that is the "nobody got fired for buying IBM/Cisco/etc". You're somewhat more insulated from accusations of cringe or racism because you can't accuse someone of those things for how they view their own culture. It's a touchy area, nobody wants to be in the news because their recruiting event turned racist. Reactions are harsh, I don't think "We did research and tried to put on a tastefully themed event, but failed to consider this particular viewpoint" is going to get you out of the news. I also always took the "ambassador" to be an external facing thing. They speak for their culture at that company; the places I've seen it I was never given the impression that they were meant to be an ambassador for their entire culture. Maybe I was misreading it, though.