Yeah, completely agreed. Overall this poll seems to be split between actually things people argue about (like Fighter) and things people just recognize as being Not Very Good without much argument.
Ranger, Monk, and to a certain extent Sorcerer and Warlock, are understood to be underpowered. But those positions aren't particularly controversial. "The Fighter is weak compared to every other class," on the other hand, is legit something a fair chunk of fans believe, and also something a fair chunk will vociferously deny and repudiate. THAT'S an argument.