There is a difference between modifying the content in a post and removing it al together.

We want people to see the true you, not some canned response/opinion that has been given to you by the source, but rather your own unbiased opinion on the matter. Which means you better do research and educate yourself on the topic before posting. Like I said in other replies, you need to provide reliable sources of information, generally at least 2 of them, but more is better. The intent is to prevent an echo chamber effect. We also have a living constitution we are working on that allows changes as needed to help mitigate these problems, and all the votes are voted on by registered users, not the administration of the institution.