Stilton - More important to keep the wings level? How much does the plane roll downwind on takeoff roll if no input is made? Half a degree? One degree? And for that guys are putting spoilers up before it's even required? Boeing has described the procedure they used to generate the takeoff performance.
If you're anywhere near balanced field length, and having multiple thrust settings and assumed power takeoffs creates that situation, what is your takeoff distance if you artificially increase your drag during the takeoff roll?
Necessary technique/procedure for light airplanes? Absolutely. Jets? No.