The cake aspect is weird and I don't know why it's part of it. Don't get caught up on that. It's almost like how at gender reveal parties they do colored icing in a cake, but the cake itself is not necessarily inherent to the gender reveal. "Hear me out" scenario is a thing. People were doing a trend where they put them in cakes. Why? No real reason. Doesn't really make sense.

Maybe it started with something more specific like getting a cake with an image of a "hear me out" character printed on it and evolved to people putting them on sticks in the cake.

In any case, I'm actually doing this for a friend's birthday party this weekend. I'll let you know what happens.