Just had a thought, might be nothing.
Q uses the phrase, "These people are stupid" fairly often.
Q removes the I from C_A.
What do you call people that lack intelligence?
Stupid.
I think Q is confirming, when he calls someone stupid, they are C_A.
With that thought in mind, go to your chosen Q-post aggregator and search "stupid". I think it fits.
We have more than we know.
This thought may have been expressed and debunked before, I'm not here every day.