You've been on HN for 8 days. Imagine you were on it for 800 days, and then take your average comment mark, that's how you'll rank regardless of what makes you you.
I wasn't thinking about the Y-combinator application when I registered my account 450 days ago and when tianaco occasionally commented on threads.
I don't see this as a problem.
I went through my submissions and they are 100% mine. I went through my comments and can say with confidence they are 95% mine. The true number is probably higher.
Does that allay your concerns?