i hesitate to get involved in this kind of thing, but i want to point out that the post in question does not just contain "accurate, factual data" -- it contains an imperitive ("be sure to...") which makes it seem as if it is everyone who buys the camel's responsibility to tell ora about problems in their books. while i personally agree that one should report errata, i do not in any way feel that one must do so; and commands of any form often seem harsh over electronic media, since tone of voice is absent. it would perhaps be more acceptable to some people to word it as "ORA actually appreciates reports of typos, so that they can be fixed in later revisions; they can be reported to..."
on the one hand, i agree that voting based on personality, rather than content, is poor form. on the other, i am reluctant to say that perceived tone is not at all content or the poster's responsibility.