What's with people fancasting celebrities kids?

And I don't mean celebrities who have equally famous kids,I'm talking about people who cast Donald Glover's third kid or Danny Elfman's son who, as of this writing ,has done nothing noteworthy.

what is going on and why are they being casted ?

I don't mind them existing but what is the influx of them here? These kids don't have any acting or any professional experience at all.

<blockquote>what is going on and why are they being casted ?</blockquote>

Likely nepobaby stuff to do from some users with the only thing I have been seeing most of them is through <a href="https://www.mycast.io/stories/showbiz-family">this</a> story.

And I also think maybe if you are wanting to fancast younger versions of the actor as well with a relative of theirs playing them is also a reason.