While I don't know about this company or the situation, I'm genuinely curious as to the reasoning behind including statements like this. They seem to be purely detrimental. I certainly can't see how they would make anyone less upset about the situation, and can see how they would make people angrier. Wouldn't the page be less provocative without that last sentence?

Do the people writing these genuinely see them as statements people will appreciate? Or is the motivation to burn bridges and ensure that customers they no longer want will be offended?