These towns and villages were formerly populated by Armenians, who were forced to leave the area after the Azeri attack on September 27. Since these "settlers" are mostly terrorists and extremists who fought in Jihadist organizations such as Jabhat al-Nusra and even the Islamic State, the formation of Wahhabi strongholds in the border area with Armenia, especially on its southeastern border, cannot be ruled out.
Apart from being a potential danger for Armenian troops from Artsakh (Nagorno Karabakh), as well as the Russian peacekeepers along the LOC (line of contact), these terrorists are also likely to come in contact with regular Armenian troops in Armenia proper, as well as the Russian border guards helping Armenia to protects its borders from two extremely aggressive and expansionist Turkic neighbors.
This, in turn, is extremely likely to lead to another war and Russia could be put in a situation where it would need to choose between appeasing Turkey and Azerbaijan, or going into a full-scale confrontation to save not just what's left of Artsakh (Nagorno Karabakh), but also Armenia proper itself. And it's far from impossible, as even Azeris are infamous for hideous war crimes against Armenians and their legacy.

President Ilham Aliyev of Azerbaijan (R) and his counterpart Recep Tayyip Erdogan of Turkey,
On the other hand, maybe that's precisely what expansionist Turkey wants, as Erdogan was unpleasantly surprised by Russia stepping in and preventing complete Neo-Ottoman victory and yet another slaughter of Armenians in their ancestral lands. The signing of the trilateral peace treaty between Russia, Armenia and Azerbaijan left Turkey out, despite the fact that Turkey's involvement was crucial for Azerbaijan.
The strategy of settling terrorists so close to Russia's critical southern flank, in the direct vicinity of the ever-volatile North Caucasus, could lead to Russia being pushed into a corner, leaving it with no other option but to intervene directly, which would inevitably lead to a defeat of Neo-Ottomanism, as Azerbaijan (and even Turkey itself) is, militarily speaking, a midget in comparison to Russia's massive military.

The current lines in Nagorno-Karabakh, November 2020. Russis now in control of he two “areas of responsibility” (in green and orange)
R.C.