The comment bothers me beyond just the use of hashtag. You are mixing the ideologies of a person along with a company which to me is not very intelligent. While he may be the face of a company and direct their strategy he is ultimately answering to the shareholders. What he does in his personal life is mostly irrelevant as long as Apple is profitable.
Adding the hashtag at the end of what you are trying to communicate puts salt on the wound as lyke w tottally cud write like whateves and you'd understand but lyke its not cool, ya know? #whatisdecorum
To be fair, hash-tags are used to categorize and group content on social media. HN does not implement this functionality. Essentially, the '#' serves no purpose on HN. Therefore, it is easy to see why people get bothered by it.
You should look past the silly things and understand the message / purpose of the comment