Ya. Blockstream/Bitcoin Core devs have been known to not keep their word.
I think BCC will run until November as a contingency to see if core will actually implement 2x. If core does not, then BCC will be 2x. If core does, then BCC goes away. It's quit simple its really up to core to decide if they will honor 2x or not. BCC is just there as a backup because with SegWit being an irreversible change, any engineer/dev/ops team would like to have a contingency regardless of factions, its a saftey measure..
Blockstream did not sign
the Silbert Accord (a.k.a. the New York Agreement)
I don't see any current Bitcoin Core devs on the list of supporters either (the former lead developer Gavin Andresen did sign the agreement).
In fact, Bitcoin Core as an organisation would be effectively breaking
its word if they
did add SegWit2x logic to Bitcoin Core.