Agreed the date should mean nothing. Right is right. Wrong is wrong. Right? Wrong... Socially accepted correctness has changed over the ages. I'm pretty sure he means we know the world isn't flat, we don't burn witches and we don't execute scientists as heretics anymore just for starters.
Personally I took what you wrote as a joke. I didn't actually think you were gay bashing.
And it was a good video regardless of the outcome of the race.