Chugalug
"Surprise, surprise the forward ones were then found to cause excess glare under the conditions you describe "
No, you are not listening.
It had always been the case that we had turned off the previous flashing lights!
It was not a new phenomena!
The old flashing lights flashed and the new flashing lights flashed. Both were routinely switched off at low level.
To say that the crash was airworthiness related is totally misguided at best and dishonest at worst.
If one of the crew was wearing a t-shirt rather than an aircrew sweater, then that would also by your definition make it un-airworthy, but it does not make it crash.
Indeed as you say the BOI discounted it as a factor so stop citing it as an airworthiness related accident.