Maybe there is a lack of available video courses teaching functional style, it might not be as hard as it seems (wan't for me, but a sample size of 1 is anecdotal). Give it another try perhaps?
What I'm trying to say is that it's very likely the user doesn't even know what "functional" means. They just hear some keyword they don't understand and dismiss anything that follows. Because when you think about it, it doesn't really make any sense that a programmer could be a programmer if they couldn't look up things they don't understand.