Square, i answered it in my first reply. I said it’s reasonable, and not childish to believe based on mesorah.
I’ll further add that just as chazal say that divrei Torah are hard to acquire as gold but easy to lose as glass, emunah is a refined trait that is easily damaged by bias, middos, the perverse culture we live in, and other factors. That’s why it’s in the same pasuk as not going after “your eyes after which you stray” in lo sasuru, referring to looking at women. Emunah was designed to be something that one works on consistently, not merely the winning of a philosophical debate
The chosid yaavetz(who lived during the Spanish inquisition, not to be confused with rac yaakov emden) writes that the Jews of Spain who had not explored philosophy left during the decree, but those who were into it became illicit marranos.
Enunah is to be guarded as one guards any other valuable, irreplaceable item. The rambam cautions against free thinking speculation by saying that it “destroys the world”, in avodah zara 2:2 ואם ימשך כל אדם אחר מחשבות לבו נמצא מחריב את העולם לפי קוצר דעתו
Even the rambam who holds of philosophy for those ready for it, understands that emunah is not weak if the person attempting to acquire it is a regular human with frailties and biases.