However, it hasn't changed this year. From the CFP website: "The selection committee ranks the teams based on the members’ evaluation of the teams’ performance on the field, using conference championships won, strength of schedule, head-to-head results, and comparison of results against common opponents to decide among teams that are comparable." That is the same methodology they've used since 2014.
The change to BCS with computers and from BCS without computers was more likely to shift how the ranking turned out, but they were still pretty tightly correlated to the AP/Coaches poll. Not 100%, but pretty darn close.
If the Committee was packed with SEC/BIG ADs, I'd be worried. It's not. The members were chosen from a wide variety of backgrounds and locations based on knowledge and integrity.