I specifically considered only three deaths a day, ignoring vigilantes. If my numbers didn't reflect that at every turn, it was a math error or typo.
18 to 15 to 12 to 9 to 6, from today until opening of Day 6. For Day 6 to even happen, two scum have to die.
You aren't making any new statements, but you are muddying the waters unnecessarily. Yes, we could lose with 4 (4!) mislynches in a row, but considering the possibility that scum kills each other at night, it is not guaranteed even then.
Even with 3 mislynches, we have 6 other deaths, and it is there that I think we are more likely to have scum die anyway. Twice as many chances, after all.
But even with 3 mislynches and 6 town NKs, we start day four with 5 town vs. 6 scum or 6 town vs. 5 scum. In either case, no single scum faction has a majority, and claiming scum to get help from other scum seems unlikely, and hard to pull off anyway. Clearly, if it looks like we are heading to this scenario, we try harder (and probably deserve to lose considering the position we are in right now).
You are also FOSing the exact opposite of the people I think deserve to be FOSed. Scum are more likely to try to obfuscate, distract, and disrupt the broken setup plan.