As soon as somebody says any sport is a “children’s game” they show they’re grinding an ax and not really dealing with facts. None of our major sports started off for kids, they started off as hobbies for adults, usually young adults, often times part of college fitness programs, but still for adults. Eventually they spread down to kids with jr leagues, but they’re not children’s games.
Fine. I stand corrected. Men sitting on their butts watching other men play games. Knitting and flower arranging are more masculine as they are active rather than passive.
And baseball likely started in Great Britain as “Rounders” but that doesn’t stop it from being called the American Pastime.