I never understand when people say things like this. Give me less!!!
because this is the internet and anyone can complain about anything
because a variable aperture lens is commonly viewed as inferior to a constant aperture lens, even if having 2.8 to 4 means getting more than havin 4 all the way
because on this forum, which i've been reading for some years, there will ALWAYS be someone to complain that a newly launched lens isn't some other lens that already exists or is phisically/practically/financially impossible
i could bet a kidney that, if the new canon 70-200 f4 would have been launched alone, someone would have bit....complained that it's not f2.8, same as someone said that stupid canon didn't make the f2.8 m3 into an f2