Genghis:
All I can offer is a couple of anecdotes from past years.
1. The RAF realised decades ago (1960 ish) that nylon had no place in aircrew clothing, after serious burn incidents with socks and watch straps in cockpit fires - I remember seeing related Flight Safety films and photos back then. It amazes me that cabin crew still wear this, and other flammable materials.
2. In the 80s, before high viz jackets, the airline I flew for had a pilot hit by a baggage tractor on the ramp at MAN while doing a night walk-round in his uniform navy blue raincoat. He was badly injured but recovered. BALPA started pressing for high viz clothing, but it was some years before it appeared. Now, as noted above, it's being devalued by unnecessary use.