Don't flatter yourself and your engineering knowledge.
Can't you see that a significant part of the first stage low pressure compressor fan appears intact along with the spinner?
If you remember anything about convergent flow in ducts, you will remember that the static pressure in an accelerating stream of fluid/air flow drops compared to that of the freestream (external/adjacent to the cowl opening). There is a net suction inside the lip of the nacelle/cowl opening.
It's highly likely that the material that separated from the forward cowl/shroud initially was sucked inward in relatively large pieces, making it less likely that pieces of any significant size were ingested into the engine core. Some smaller pieces of debris may in fact have passed through the bypass (cold air) section of the engine.
Back to school lad.
The intake is a divergent duct. Convert ram effect to higher pressure and slower airflow.
Basic engineering knowledge. But you knew that.