Why would a guy keep off the "want children " section on his dating profile?

I'm on hinge, 35 and i noticed most of the guys who match with me either don't want children or can't or leave off that part. The last one who was interested in me, who I've been doing extensive video calls with but never met, was charged in his twenties for child...and his was left off. I found out after looking him up. We never met.

Now i am scared, as a other person is interested but left it off his profile too.

Is it that they more desire women in their thrities cause they think we don't want kids?