I know I know, it was just a poor example.
Really it was to just say that once a square taper bolt is properly tightened, in my experience Ive never really had them loosen, but I'll do a cursory check maybe once a year when I do a big go over, but I always check these bolts on friends bikes that I look at, just to be sure.

Although Im new to outboard bearing bb's (and like them) it would seem to me that they would need a check sometimes also. Im pretty certain on a day off on my last trip, where I tend to do a go over of the bike, that I had to slightly slightly tighten one of the bolts on my crankarm with the hollowtech 2 or whatever bb it has.

and yes, I totally agree that better ideas come out, hence my embracing of the outboard bb and disc brakes, but realizing the older stuff works fine too generally.