The line shares responsibility in that they are allowing holes to form, but there have been countless times this year where a linebacker or safety has been in position one on one in the hole or in the flat and can't finish or whiffs altogether.
When I noticed this in the game against The Orange I thought maybe their athletes are just faster than ours, but then when the same thing happened over and over against the Mighty Dukes, Louisiana and NWU, it became clear even to my muddled mind that it's not so much a matter of speed as it is technique. I believe you used the right word, "whiff." Our defensive backfield kind of plays the "whiff defense," which is akin to the matador defense in basketball, of which I've personally been a practioner, and therefore a quasi-expert.