Before the day of judgment, or rather, the night, there will be another newspaper that will help to more accurately determine who Jen Li is. If we execute Alex now, and he is a minor character, then things will be much worse than if we execute Kane.
Author-work – both are clues; I wrote about such a connection in itself. I like the clue about the Shaman more not because of the connection, but mainly because the clue itself fits well into the chain.
The City dwellers are still needed for recruitment. Therefore, it is more profitable for them to kill their competitors.
Your last argument depends on the moment in time. In the next game day, it will weigh three times more than it does now.
I am just worried that it may simply not be possible to get rid of even one of the main mafia bosses in one day plus one and a half nights. After all, it is not a fact that they do not have protection. But since even the author of the clue considers his clue not promising enough, then, perhaps, the probability that Alex is Li becomes less.