You are presenting the "Limbo of the Children" as "dogmatic". The International Theological Commission (a body of expert professional theologians whose members are appointed by the Pope) has a rather different view on that Limbo [0] than you do (my emphasis): "This theory, elaborated by theologians beginning in the Middle Ages, never entered into the dogmatic definitions of the Magisterium, even if that same Magisterium did at times mention the theory in its ordinary teaching up until the Second Vatican Council. It remains therefore a possible theological hypothesis". [1]
[0] I say "that Limbo", there is also much talk of "the Limbo of the Fathers"; and more rarely and controversially the "Limbo of Virtuous Pagans"
[1] https://www.vatican.va/roman_curia/congregations/cfaith/cti_...