They had a bot, for a
long time, that responded to every github issue in the persona of the founder and tried to solve your problem. It was bad at this, and thus a huge proportion of people who had a question about one of their yolo models received worse-than-useless advice "directly from the CEO," with no disclosure that it was actually a bot.
The bot is now called "UltralyticsAssistant" and discloses that it's automated, which is welcome. The bad advice is all still there though.
(I don't know if they're really _famous_ for this, but among friends and colleagues I have talked to multiple people who independently found and were frustrated by the useless github issues.)