A fascinating article, if a little unwieldy in its prose. However, it uses the word "may" no less than 24 times to present its case. This is hardly likely to convince any audience, particularly one consisting of professional pilots, who are used to dealing with practicalities any certainties.
NotsoFantastic tell us, above, that his 747 WILL use (approx) 16% more fuel if he flies at the levels recommended by the scientists. His company is not going to even think of allowing such measures without strong and persuasive facts.
Piloting is one of the few occupations in which one is required to take true responsibility, or put your money (life) where your mouth is. If scientists want to convince these people, they will have to have significantly more conviction than the author of the article has demonstrated.