Frankly, that's as it should be. If your opinion diverges markedly from consensus reality, it's your responsibility to be extra polite and diplomatic about it, to prove that you aren't just a nutcase and you've actually thought carefully about it. Society has every right to suppress flat earthers.
Not sure if you've made up "consensus reality" as some ironic Orwellian sarcasm, but it's fantastic. As though articular opinions about the merits of Brexit are reality depending on what large segments of the population you ignore :)
But no I think it's even simpler and it's not about what should be. People are generally fairly close minded and are easily upset by hearing about opinions contrary to their own. That's it. It's just the human condition.
