Is too much of it bad for you?

This might seem like a stupid question but I’m only asking because someone I know is convinced this is true... if a guy masturbates too much can it decrease or effect his chances of having children. Someone who does it multiple times a day almost every day. Can that be a reason he’s unable to have kids? He says this older guy he knows has the same issues. I don’t think it makes sense but for some reason he believes it.