I, sometimes wonder why should I change the Anchor initially when I am providing relevant and unique info. what I anchor text for. If users esp. search engines won't understand what this page all about then how a web-page come in search results ?
SMO users ? They gonna tell users/search engines this page is about shoes, books, etc. etc.
Why people are behind of link modifications. Definitely spammy links should be removed but I feel others are fine.