It would be an interesting experiment for someone who has never seen the OT to watch TFA.
It would most likely ruin his Star Wars experience. I would feel guilty simply if I did not try to convince a friend to watch OT first, let alone purposely do some “interesting experiments”.
Someone is bound to drag their non fan boyfriend/girlfriend or relative to see it. You’d have to be living in a cave not to be slightly familiar with the basics of Star Wars. There’s hardly anyone who doesn’t know of Darth Vader or what a stormtrooper is.
And lest we forget, the original film dropped us into the middle of a conflict we knew little about.