Real is the wrong word.
Where your Youtube apostle get it wrong is in the premise...... religious truths ultimately have little to do with causation and everything to do with meaning. Saying the ancients used scripture as scientific text is nonsense...this was mostly a 16th century complication. Really the religious life of the West ( including the Greek East) had very little interest in causation, and were quite comfortable understanding scripture as analogy, metaphor and narrative. Virtues such as humility were emphasized much more than causation.
What does empiricism have to teach me about humility?
Empiricism can teach us a great deal about causation, and knowledge of particulars...but very little about meaning and the properties of "being" ..... such as the moral life, the good life, beauty, love, justice, etc. ....these aren't necessarily religious pursuits in and of themselves....but religion does attempt some answers independent of, and often co-dependent on, competing epistemologies.
......burp......