Chainmail also was when properly used several layers thick and its reported "Inability to block arrows" Creates the largest loophole in history that frankly I don't know how to fix at this point if it is true. Heck it completely alters the first Crusade (after the People's Army event) where they relied on their armor to block arrows.
"This deforms the link, possibly breaks it"
-Alright... so only 5-10 more links to go, the fact that the person using the Arrow is mostly not incredably trained, the quality of the bow, the arc of the arrow, as well as the angle. The Arrow would most likely be Broadhead instead of Target (I think that is the term) so that it would have weight when it falls.
-At this point... and your constant description of Chainmail... I think we are hitting a point where we both are talking about two things called Chainmail... Which is why I loathe Medieval terminology...
"c) Chainmail can actually be a liability, as arrows, bolts, and especially bullets will rip the chain links apart, causing small bits of metal shrapnel in the wound"
- Yes but the alternatives weren't good.
"The arrow went through the first layer of chain mail, the wooden board, the rear layer of chain mail, a barn door, and embedded itself in the rear tyre of a tractor. Farmer wasn't happy"
-Yay, using Modern Day weaponry against an unknown quality of Chainmail is fun. Though that does make me question why Arrows do not pass through targets more often... I guess they have magical forcefields
"The bloody thing was designed with the express intention of taking a charging knight out of his bleedin saddle before he ran you through"
-Yep, Cavalry for the longest time had a unquestionable supperiority. Though in all likelyness they were never going to take down the whole troop
Ill pick my battles and just say that Armor was much more useful against arrows and even Crossbows then what Dwarf Fort potrays in which it is a Miracle your shield can block it at all by your descriptions.