After I saw this I got intrigued and flew around a bit. Even more than 3 systems away from a Final Loon, gates are flickering. Even gate in Fortress systems flicker. If this turns out as expected, you might get trapped in completely unrelated systems or systems that were considered secured and freed from Trig Shits.
Newest Scope video for additional references. Thank you. @Elsebeth_Rhiannon