Agreed.
Point 1 & & are illogical as there can be no certainty without proof. Simply calling a belief (whether in 1 or 7) something 'you know for sure' is misusing the words. I have no issue with anyone saying they 'absolutely believe to their core and they do not doubt' but going a step beyond to 'know for sure' is both illogical and crosses into dumb.
I have not met anyone in bucket 7 and i have spoken to a ton of atheists, as i actually studied this and religions for a period, on my own personal voyage, but i am sure in a big world such illogical people exist.