Barracuda not starting after being parked for five years

No, battery.
11.2 is nearly dead as far as batteries are rated. Perhaps during cranking the the voltage falls to 9 or 9.5.. With the starter taking all the electrons, there will be nothing left over for the coil.
True. Its a crude test (I think is in the service manual) but when the voltage drops that low during cranking, its a good indicator battery power is very low. Put a charger on that battery (at 2 amps if its switch selected rate) for at least a few hours, maybe even overnight.