Horrible and bad are value judgements.

Infants aren't capable of the higher level reasoning that would enable them to do bad or horrible things, let alone be "bad or horrible" people!

Very different for an infant to feel upset or have an impulse to be alone and scowl, cry or turn away to convey that than for an adult to do harm.

And I completely agree babies are born innocent. Can't commit a crime if you can't think it through or even perform the physical actions necessary.