Well, if I was an observer, I'd think Karkador staked too much of a position on himself (with almost no pressure on him) to be scum. Scum would want to remain fluid and anonymous enough at this point of the game, in order to blend with whatever comes up, and keep the conversation lasered on a player who is likely to get lynched - this is pretty much exactly what Launch is trying to do.
As an observer, I completely agree. This move does not seem to equal scum to me. The way I see it, there are 3 possible scenarios that can happen here but two of those scenarios make lynching you a good choice today. I just don't want to lynch you and then find that you flip ordinary town, if that's the case this would still be beneficial because we'd have no leads to track on day 2, but we still could have had leads without a townie sacrificing themselves.