Just to backtrack on a post you made a few days ago, I'd suggest QF are being condescending on these issues simply because they think they can. Failure of their crew with actually providing the service advertised and sold is not really a concern for them, it would appear, it would appear and to blame the crew, like they did in that email to you is also admitting failure at a supervisory/management level.
If repetitive crew failures ended up in a coroners court (not likely with what we're discussing), I doubt management would gain much traction with a plea of "it wasn't our fault, it was the crew". That would simply be an admission or complicity or incompetence.
Whilst I agree that VA do indeed offer a better J product, I would not go as far as to suggest it is "far" superior. If QF start to lose discernible business as a result, it wouldn't take them much effort to surpass VA. At the moment though, it appears management at QF couldn't give a toss and are quite happy for their staff to fail in delivering the sold product.