But it's not harmless, that's the point. It's attention seeking behavior, not the worst, but not for any good reason either. These 'events' are being done for the sake of attention, for an audience, and that puts pressure on both parties. One has to come up with something clever, the other has been pressured to say yes. It's being recorded, photographed, etc.
The gender reveal - most of the time I laugh, thinking that it would be great if the kid ends up being trans, fluid, neutral, or any other form of non-binary. Or just really hate pink or blue
There's bias there - the author could have only interviewed that population, the ones who enjoy it. And that poor kid - what if she says no after all the effort?