With one barely mentioned planet, this episode reframed the plot originally designed to hold together TNG, DS9, and Voyager.
Federation authorities insisted the DMZ colonies were recent and had been warned they were disputed territory. They painted a picture like Israeli settlers in Gaza refusing to obey their own government and leave.
But now we have a Federation affiliated colony on Setlik 2 a century earlier.
The UFP’s failure to stop the Maquis terrorists always seemed like command wanted the war restarted with plausible deniability. Now the Maquis arguments are stronger. Ceding long-held territory is much easier to call abandonment.
TNG also had Vulcan extremists (trying to recover ancient psyonic weapons) and Sela must have expected a fifth column ready to defect once her thousand troops landed and gave them an excuse.