No. Just executing everyday life requires people to rank stuff. That concept by itself isn't difficult. Now as much as I tend to like to dis my MIL, she's not really stupid. But she has voted in elections for ~60 years, and for all of which she's voted for exactly one person for POTUS. So that's a challenge to get people to expand their mindset to rank the available candidates. Younger people might find that an easier transition. That doesn't make old people stupid.
Another challenge, how do you create a simple interface that everyone understands the same way, which allows people to reliably rank their choices. That's more difficult to do with a manual system. And having a GUI creates another set of issues for people who haven't used computers. That's where the technology part of it comes in.
INGO would be torn, on one hand older folks tend to vote Republican, on the other I just read recently where Hilary Clinton doesn't know how to use a computer...