Shouldn't CFP rankings be used instead of AP/Coach's

If we base the playoffs off of the CFP rankings, shouldn't all media and everyone else use those rankings rather than the AP/Coach's after week 9 once they're released? I know lots of media counts it like that, but it seems that not all of it does.

Maybe I'm just biased and I'd prefer LSU being #7 the last three weeks rather than the AP/Coach's rankings.

Another reason that I'm putting this out there is that I think playing Texas A&M this weekend should count as another ranked opponent. The AP/Coach's polls don't give them any credit, but they're ranked 22nd in the CFP, the poll that actually matters.