Political divide most likely. While the site sure gets spammed by bad stuff from time to time, most of it is normal.
So if they told you not to come, it's most likely due to a disagreement they have with what is said on the sharty and it's affiliate websites.
While there are users on both sides of the political spectrum, these sites are normatively conservative, and host a minority of people with extreme beliefs. And notwithstanding this diversity, these sites are particularily anti-trans, as said. Thus, if you or your friends really are trannies, then this is most likely why they told you not to come.