I think the submitter, which appears to be the author of the essay given the account and host names, doesn't care about promoting a discussion. The account has

I think the submitter, which appears to be the author of the essay given the account and host names, doesn't care about promoting a discussion. The account has posted self-hosted essays about every two days for almost a year. They garner almost no comments, and no followup from the submitter. Instead, the account gets downvotes, and has an average karma of .81. This suggests someone using HN mostly for traffic promotion, and is unlikely to respond to either of our comments. I agree that your points and conclusions are good ones. The "-or" vs. "-er" observation is weak; it's a historical relic of how we treat Latin vs. Germanic words. Had the author been more well informed on grammar, the essay would have refered to agent nouns, and included "beggar" and "liar" as two of the rare non-er/non-or cases.