I mean, they reached the point at which they had both control over the thread and still their strongest roles left. When I joined Cycle 6 the only obstacles were guys like Sallu whose roles were too broken. But once they were gone, Town lost this and it was only a matter of which scum group would be victorious.
To me, I think one can see it in multiple perspectives
First, scum gained control over the thread which was literally added bonus over their op abilities.
Second, scums blended well with town. They were not leaving much room for town to catch them which isn't easy at all.
Third, active town members died early (Al, Drago) or were a bit passive in leading the game.
Also, many of the town members who could have been able to scum hunt way more effectively were not that active in game like kiwi, noctis and many others.
Day belongs to town but this game both day and night belonged to scums and deservedly so.