Sure steel QRs are better...but to assign most of the blame to the use of alloy QRs is to ignore a more important issues:
1. Many folks either don't know or forget that QRs are a TEMPORARY affixment method.
2. Many folks claim or think they have their QRs steel or alloy clamped tight - but they don't.
Many times over I've had to assist customers by reviewing their use of QRs - and basically retrain them - especially pointing that the binding upon close typically starts out right about perpendicular - which of course makes some go "Ouch!" upon finally getting the lever all the way closed.
I sure many mechs here like myself have come across an occasional wheel they could have literally just yanked right out of the forks without touching the QR because the clamp force wasn't even registering.
Some get a little discouraged - but eventually figure it out and get used to it. In the end understand it's a safety thing.
=8-)
__________________
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life