It's relevant to this tangent about 3e spells. However, 3e spells are not relevant to a discussion about a 5e fighter ability.
At the moment, we have one, non-core spell, that contains several rules elements that do not reappear to my knowledge anywhere else: the way cold immunity and dex damage interact, the attack bonus the spell gives, and the damage dealt on a missed attack. So he made a statement, and now one really bizarre and isolated example has been posited against it (as [MENTION=6750373]dmgorgon[/MENTION] notes, this appears to be a bad conversion of a 2e mechanic). Ever heard of the exception proving the rule?
If there's a second, or if there's even one in the core rules, I'm unaware of it. The only thing that tells me is that he made a slightly overbroad statement as part of dismissing this tangent; he meant to exclude area spells but neglected to exclude grenade-like weapon spells, which are area effects but also have an attack roll involved.
In any case, so what? What if there were twenty spells in the 3e PHB that required an attack roll and dealt damage on a miss and had no area component whatsoever? Would that create a precedent that would suggest that a 5e fighter ability should work the same way? No.
I'm concerned with accuracy, but also with pertinence, and this line of inquiry is much like the kind of procedural chicanery defense attorneys use when they know they can't win a case on evidence. Try to move the discussion to anything but the topic, and revel in irrelevant details, and make every effort to show the other side up.
Enough.