You're correct in that the simplified version just leads people to come to wrong conclusions and shouldn't be taught. Prime numbers aren't really important to the math being taught at grade school level and can probably be a subject held off until middle or high school level math when the students can better grasp the concept of what they are, why they're important, and what constitutes a prime. But the problem here was that the OP, after people tried to educate on the misunderstanding was still arguing that their wrong opinions why 1 should be considered prime were just as valid as the facts proving that it is not.
Because this is the same person who started a thread complaining that "November isn't fall!" Which sparked the comparison of "1 is a prime number!" and failure to accept they're wrong when faced with facts and move on. And since I'm the one who brought up Italy, it's because the Romans were the ones who defined the dates of our current system, and they based that off weather patterns in Italy. Even knowing that seasonal and weather pattern doesn't reflect most of the world, it's still the generally accepted dates.
