Bob should have gone to Australia, where he could have gone fishing in areas so remote there was no pollution and were no other fishermen. Primordial fishing areas no one has fished ever before.
And yes you do need to check your lures.
One of the main problems stems from poor maintenance, not washing your lures in fresh water after a fishing trip.
The attachment loops on the body of the lure get corrosion and break, even if it is stainless steel wire.
Guys will change and upgrade treble hooks and split rings, but I have seen it where they never check the actual connection points on the lure itself, and lose huge fish.
You may have the best alloy treble hooks that won’t bend and heavy duty split rings, but if the connection loops on the lure are corroded, it doesn’t matter, you are going to lose the fish.