Largely speaking, and with few exceptions, this is a community moderated forum. Enough of the community decided that the submission wasn't sufficiently on-topic.
If you feel strongly that the data you presented is on topic then perhaps you would fare better not simply to post a bare list, but write a blog post about why short names like this are of value to startups, and how having a short domain name can radically improve your chances, and how you wrote a script to create the list, and now you're sharing it because you believe it to be of value.
You claim the protester gave no reasons for claiming it's pointless, but equally, you gave no reasons for why it is of value.
And just in case I need to say it again, I'm merely providing my analysis of this situation through my model of how the community works. I personally am passing no judgment on how HN works, nor on the community's interests and/or actions.