Yeah a celebrity's life choices are so far removed from the realm of relatability from the average person they shouldn't be used as a role model for anything.

In terms of being childfree - I would never tell someone that they don't know whether they will change their minds regarding kids.

I am childfree too, and while I don't know how my future will unfold so feel uncomfortable making 100% definite claims about the desires of my future self - I can say for certain that I don't want kids NOW. And I don't think it's likely I will want kids in the future so I will live my life as though they are not. And if I change my mind I'm allowed to do that. But for now, I don't want kids. And that should be enough for anyone! Why do I have to know 100% whether I will want kids in 10 years? It's nobody's business but mine (and my partner's).