At different times, I downloaded or acquired a total of more than 2000 pages about the usage of airborne weather radar. And almost 70% of those, I read and understand them throughly. Sometimes they were repeating each other or sometimes they were pointing out a different part of subject. But they were never contradicting.
In my line life of 25 years, I see 95% percent of my collagues are unaware of the correct use of wx radar (mainly tilt). Among them there were very experienced pilots. After some age, it is diffucult to convince them the correct way and kill the old habits of those which heritaged from old-style green painting radars.
At the end, I am not surprised with the result of survey mentioned by TL.
Regards.