That was Bob Vila, and actually he was employing one
of those gripper
wrenches that automatically adjust to any nut size. They work pretty
well.
... for rounding thr corners off the nuts.
Seeriously, like just about every other hardware hacker, I have at least
one adjustable spanner. But I never use it if I have the right size
'fixed' spanner or socket available, which considering I have metric from
2.5mm to 41mm, AF from 3/16" to 1~1/2", and BSW, etc, is not often....
-tony