I guess
It may be the Internet, but why the instantaneous "gotcha" syndrome? Aviation is a massive industry involving dozens of mobile and rapidly evolving technologies; "New" Types are struck years before they enter the Fleet. The paradigm of Aviation, with all the hyper-tech, is that Market vectors, Weather, Resources (Fuel, Human) drive what is essentially an economic Guessing Game. Flying a Heading is Wisest until mid Route and the unexpected. Given how my family makes a living, you might think I'd be a rabid Boeing nut. Not so, the Real World is full of the unexpected.
Gas Hog? Don't be ridiculous, competition (a good thing) won't permit it.
Razor thin Fuel advantage? Maybe, but other factors drive acquisition and Bottom Line. I enjoy PPRuNe immensely, but at times the lack of respect and patience (not PPRuNe's responsibility) is annoying. We may be heading for some belt tightening as an industry/service provider, and I'd really like to see some Inter Flag cooperation and support, a little like yesteryear, maybe.
Airfoil