What's my end goal then with claiming like this?
I'm secretly an arsonist and just want to kill batsnacks and Barrylocke tonight with my final night phase, and then get summarily executed by town tomorrow? Why would I throw the game like that?
What I think is that you are scum and are pretty much really afraid of giving me another night. Because it is bad for you either way. If I am arsonist and decide to just throw the game entirely, you die with Barrylocke. If I'm telling the truth though, you'd be hard pressed to explain why my win condition succeeded given your behavior today.
If you're telling the truth, which you have no reason to do since you're neutral and you can just make up whatever town-helping version of your role sounds best, your win condition would never succeed. Mafia would drag this out to waste time. And we're never mislynching town by lynching you.