Extreme descendants of time travelers that invaded other planets have often been coopted or absorbed by the operations of time travelers from those planets. Oftentimes, these extreme descendants are inbred. Many times these things have been detected, and so those extreme descendants have had their information access reduced, by both friendly and unfriendly forces.
Any attempt to lead those time travelers here is undoubtedly viewed as an attack.
Anything that associates anyone or anything here with those that invaded other places or times is viewed as an attack.