I remember the creator of D programming Language replying to me on HN on one of my posts!

https://news.ycombinator.com/item?id=46261452

Walter's a regular on HN.

> This very post is probably his too, under an alt :)

The probability of that is virtually zero. Walter is a principled person, has better things to do, and his writing style is vastly different from the OP's.

I had an interview at Facebook 10+ years ago and my interviewer was the other creator!