I don't fault anyone for liking these, especially if they don't realize they are generated. However, I'm unsure about how to react to them. Me telling people that they are generated usually dampens their excitement. But some of these videos have evoked genuine belly laughs and I don't want to be the person to ruin that.
But I can't help feeling uneasy about people being fed fake videos that toy with their emotions and their sense of reality; even in this rather innocuous context. This gets even more complicated once there is no way of telling if videos are real or fake from the media alone.
However, in the meantime, I'd be curious to hear from people how they feel and how they handle their loved ones enjoying and sharing those kind of videos, not knowing they were generated.