The issue with voting BK or Qwags before DM is that each of their red flip depends on whether you or I are town.
If you are town BK is scum
If I am town Qwags is scum
But there exists a possibility where either one of us aren't town.
However, that can't be true for DM being scum. In order for DM to be town that would make both LL and AV scum.
But if LL and AV are scum then one of us must be their scummate.
If I am their scummate that means Qwags is town but that also means you are town and BK is scum via your investigation - this can't be it means 4 scum AV, LL, Me, BK
If you are their scummate that means BK is town but this also means that I am town and therfore Qwags is scum via my lookout results - this can't be it means 4 scum AV, LL, You, Qwags
Any scenario where DM is town has the mafia already winning over us 4-3 and this game would not be continuing as it is.
If we vote Qwags because of my lookout result the issue is I could be scum and lying, which would put me on a team of Me, DM and BK
If we vote out BK because of your investigation the issue is you could be scum and lying, which would put you on a team of You, DM and Qwags
Notice how there is only one person that is on every single possible scum combination?
The town as whole only knows for sure that DM is scum
Qwags is probably scum - says me
BK is probably scum - says you
So we have to vote DM to make sure that neither you or I can set up the town to misyeet.