Even if Felipe was feeling compromised, and it's understandable if someone would be emotionally affected by Lo's tragedy (i know i was)... in the end that's still his responsibility as a competitor. Resiliency, mental game, ability to react constructively to adversity, et cetera et cetera, is all just as much a factor in success as anything and everything else. It doesn't count as a 'pass' any more than having less balance, coordination, strength, endurance, flexibility, or any other quality than your opponent would count as a 'pass' for your opponent beating you (yes, that means you too Ms. Biles).
Noone ever competes while at some hypothetical idealized point in history where all the stars are in alignment for them, you are always competing 'on any given sunday'; and thus likewise, ability to maintain readiness for any given sunday is the often true test of all time greatness.
The least he could have done is play through to the end and not embarrass himself on the mic afterwards trying to asscover, and just own it.