Sorry, but it's just utterly ludicrous
for them to have a team planning session without half the team. Yes, Sakura has nothing specific
to add, but nor does Rin, and she's still there. She is perfectly
capable of having an opinion, and I see absolutely no reason why she should be kept out and then just informed of the decision afterwards, as if she's not an important enough member of the group to be given the right to even have a say
in how they operate.
And, honestly, the lack of Sakura in this chapter has nothing
to do with the plot of the story. It's simply that he seemingly doesn't think she's important enough to warrant a mention.