I understand that it can be hard for players to catch up and the host for doing the backend coordination work.
However, I don't think it is fair for active players to participate, whereas some of the sleepers fly under the radar. Mind all, I am not suggesting that they are scums. I am also not suggesting to ask everyone to start posting like crazy with those casual talk. The game have progressed to Day 7 and the players could have reduced to a reasonable participation level. Even if these inactive players have other stuff on hand, it is also their responsibility to notify the players and the host.
At the same time, I do agrees that "inactive killings" manuiplated by the host can be achieved after warning is sent. It happens in other past mafia games. Ultimately, it is up to the host to decide and weigh against all other criterias. Afterall, you are the main puppetmaster in this game of life.