Hmmm. In all of this, when talking of wrenches no mention of one that was designed specifically for installation of square taper crank arms, the Campagnolo so called “peanut butter” wrench. The handle length and shape makes it virtually impossible for the average strength user to over tighten a crank bolt unless they use a cheater bar. With it, tight is right tight.
Part of the Campy Tool Set, it was one of the most common pieces sold individually by dealers.