Uh, it did, when the time for it to speak was appropriate.
At the working group level where this issue was dealt with (and in which I was also involved), the ICRC was a very active participant (though less aggressive than the IOC). It joined the process when it was appropriate, then (also unlike the IOC) stopped lobbying and let the community engage, having said all it thought needed to be said.
What were you expecting? Where is the part of the process they failed to engage? From what i could tell, they followed the process that they thought was appropriate.