Why should PG say "unicode support will be easy and that he will accept patches"? Wouldn't making promises be contrary to the entire disclaimer he wrote? (Have you read disclaimers before? Paul's addresses at least as many facets as those written by lawyers.)
If bloggers want to influence PG into feeling guilty in order to get him to spend more time on arc regardless of his disclaimer of "when it's done, it's done," they can do it by phrasing things like adults. Or, writing their own languages.
(Great post. Maybe PG wouldn't have realized this perspective had you not posted it for users to upvote. I know I didn't notice your perspective. On the other hand, I wouldn't change a thing. You're expecting PG to plan for all potential hurt feelings, be it Mac users, Linux users, corporations, people in remote locations without access to the Internet because this means they can't download arc, and more. This is impossible to do, and leads to nothing being released at all.)