There are perfectly fine explanations to most people, actually, and anyone who disagrees greatly underestimates the ability of the common person to understand analogies. People in tech-focused communities tend to treat every common person like they're caricatures of the absentminded father or clueless wife in a 1980s cartoon.
"See, it's like you made a pizza with cake flour. It won't taste good, it won't cook quite right, and you'll be disappointed even though it kind of works. There's nothing bad about cake flour, and it works really well for what it's intended for, but it can't be used for everything."
"Imagine you were using bad steel when you were forging a blade. It'll crack, roll or worse, but it'll still look vaguely knife-like."
"It's like you're wanting to play electric rock music but you're missing a few strings and you don't have a pickup so it's really pretty much just a weirdly-shaped banjo."
That's not the problem the average person is trying to solve though, they want to know how they're supposed to tell the different kinds of flour apart.
"Just like with flour, keep them in their own containers, and keep track of which container is which. If you lose track, bake something small as a test or test the cable by plugging it in."
Only if you're doing thin crust and don't mind a crunch; cake flour in pizza leaves the crust unchewy, which is a big downside if you wanted pizza like most people want pizza. Except people who live in Detroit, who are very happy with their hard cake pizza dough.
Now, you can use both types of flour and get a cool result but cake flour on its own will leave you with a rock with tomato sauce and cheese, most of the time.
"See, it's like you made a pizza with cake flour. It won't taste good, it won't cook quite right, and you'll be disappointed even though it kind of works. There's nothing bad about cake flour, and it works really well for what it's intended for, but it can't be used for everything."
"Imagine you were using bad steel when you were forging a blade. It'll crack, roll or worse, but it'll still look vaguely knife-like."
"It's like you're wanting to play electric rock music but you're missing a few strings and you don't have a pickup so it's really pretty much just a weirdly-shaped banjo."