Seems to me as a humble slf that the pilots did a good job, though no more than would be expected of a competent pilot. And if I had been a passenger, though I would not have panicked, I would have been somewhat concerned for my welfare and double checking that I knew the drill for an emergency evacuation. I would also want to know how come the wheel dropped off in the first place.
No doubt it is no big deal for a professional pilot but it is a big deal for passengers.
If you want to hear a real scare story about bad maintenance, a hang glider pilot of my acquaintance screwed up when shortening an attachment loop to his hang glider, and ended up taking off 'secured' to his glider only by gaffer tape, which parted when he was 30 feet up.
He lived to tell the tale but never lived down the embarrassment.