Just as an historical note:
Bayonets were first developed at the very end of the 16th c. - beginning of 17th c., and, initially, as hunting implements, with the design known as "plug bayonets. They featured a handle that fitted into the firearm muzzle and a wide, double-edged, spear-like blade. See:
On the other hand, the "socket bayonet" is a late 17th. c. French invention (1670's, quoting from memory), and this is the one equipped (well, with a lot of variations) with what I understand is the kind of blade that originated this debate. For example:
I thought it might be a somewhat relevant information...