I think there are occasions where a first turn kick out is valid - such as if they are the last player to join and it's manual deployment. I've had 3 3-player games ruined recently by new players joining then never moving. I would however only apply it to new players who have never made a move.
Personally, I would like to see this:
New non-member players (freemiums) are only allowed to join games against other new players, until they have completed (say) 3 consecutive games in which they have taken at least 90% of their turns. So if they complete 2, then get kicked out, they start from zero again.
One could add to that that if they are kicked out of 2 consecutive games, they are automatically kicked out of all other active games.
Also I would say that 'unqualified' players are not allowed to join games with the same players. This would prevent a) the easiest form of newbie farming and b) people setting up multiple new accounts.
Okay so it's perhaps harsh on other new players who are genuinely trying to get interested and play, to burden them with all the no-shows, but at least they'll get some easy points
If there are genuine reasons for non-attendance then I'm happy for them to be able to appeal for reinstatement, but they should go through the qualification process again.
I am one of those who couldn't give a toss about how the sad people boost their rankings illegitimately - do they really think we're impressed by someone cheating their way to captain? - but I am concerned about time-wasters who might ruin the site.
I guess for paying members it would be different - they've paid, they can do what they like. But all the problems that I've had have been with no pay, no play