As an experienced flying instructor and examiner of airmen I'm rapidly losing confidence in present airline pilots.
Any right seater who admits that he/she would be unsafe doing a low fly by along an unobstructed runway surely needs more hands on experience and could hardly be trusted to do a landing or a balked approach.
The manoeuvre comes close to being a small segment of every approach and landing.
Hmmm, as an 'experienced' examiner of airman, Milt, surely you realise (or, more likely...not) that when one intends to land, the landing gear is confirmed extended.
Show-off's get canned, plain and simple.