Millions of unborn are murdered every year. 10-20% of pregnancies end in miscarriage. Even if we say 5% that would mean billions of miscarriages throughout history. Are these souls more deserving of being eternally deprived of the Beatific Vision than an ignorant American Indian who has committed actual sin?
Ending up in limbo isn't the same as ending up in hell.
To be perfectly honest , I am entirely ignorant on those matters and I am so incompetent that I can only ask AI about the subject.
When asking AI, it points to the school of Salamanca and the writings of a theologian named Francisco Vitoria in a book named Relectio de Indis (1539).
"Also, it is through no fault of theirs that these aborigines have for many centuries been outside the pale of salvation, in that they have been born in sin and void of baptism and the use of reason whereby to seek out the things needful for salvation. Accordingly I for the most part attribute their seeming so unintelligent and stupid to a bad and barbarous upbringing, for even among ourselves we find many peasants who differ little from brutes."
"There is no inconsistency, indeed, in holding the war to be a just war on both sides, seeing that on one side there is right and on the other side there is
invincible ignorance."
This is completely outside of my expertise, so I all I can say is that I should study this when I get the time and I'll be back.
Investigating this might prove definitely who is right about the EENS dogma's interpretation.