Calculus is not fundamental to the technology that we use every day. I work an extremely technically challenging job and I'm serious, I haven't used calculus or trigonometry since my last physics exam in undergrad. Am I happy I know them? Sure, because I like knowing things. Are they even remotely useful in my everyday life? Not a bit.

Please, by all means, demonstrate a place where a person who doesn't know calculus is at a disadvantage interacting with the technology of the world around us. Until then, I'm calling bullshit.