If our alliance member participated in the first weeks of tournament, but became inactive and the leaders decided to kick him, will his accumulated points still be counted on the total alliance tournament points at the end of season?
Yes, it counts – it’s listed as “Previous Members” on the championship page. However, for the final reward, only the 50 highest scores are tallied, so if you have a full alliance and the “previous members” score is the lowest, it’ll be ignored.
I thought if you kick hem nothing will be collected by that member only alliance members collect
That’s true, but not what the OP is talking about.