I don't get your logic.
Given what we know from Sabi, we know they have always stated what they ask their sources "Is this character in or is this leak real?" She always make a post about it before asking.
Then after she gets a response, she responds with a post virtually deconfirming that said character. If they stayed silent, Sabi would say they stayed silent.
This has been the sequence of events for the past weeks we've been talking about Sabi. If Sabi ever gets no response, Sabi would say as much and that character would very well more than likely be in. It's more logical from the insider perspective to just deconfirm everything until the time is right to reveal the info
I could be wrong, but Murphy's Law is an adequate tactic when considering what we know.