You could make points without calling the other person naive. No need to make the internet a worse place.
As far as "every available metric" goes, you're talking polls, and polls are garbage. Every poll had Clinton winning in late October 2016.
And we're in an unprecedented portion of politics in American history, so bringing up historical measurements doesn't convince me like you think it would.
I'm not certain at all, which scares me all the same. Tho the last ten years still hasn't beaten the hope out of me, so I've got that much going.