Another argument with not relying on a particular axe, is that one can get so set in their ways, that they can't adapt to another instrument in a pinch...
Fortunately guitarists usually get thumbs up to bring 2 axes to a gig...
unlike drummers, that frequently have to share a common set, & aren't welcome to move things around much...
Poolhall analogies: we are welcome to have custom axes, even if we have to grow into them...Think of the disdain one exacts should he foolishly bring his own his own pool cue to the pub: You better have some skills, or else!
a pool shark staggers into a room, takes the most warped cue off the wall, & humbles every would-be hustler with their in the place...
That's flexibility...
SMOOTH...