1. Because he has better things to do with his time than editing other peoples' posts.
2. Because if people read, and stuck to the forum rules it wouldn't be necessary.
In our forum guide - which is freely available from the link that's on every main forum page - we say, quite clearly:
"please do not exhort others to boycott a company that provided you with bad service or products. Your own bad experience does not necessarily mean that all forum members should be encouraged to avoid buying from a particular company, and we will routinely delete any threads or posts which contain that kind of comment."
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