I only disagree because I think the P5 setup means that most likely, 3 or 4 out of the 5 major conference winners will get in. If there are multiple P5 conference winners with 2 losses, and Tech wins the ACC with 2 losses, then given the strength of the ACC at this point (one can hope perceptions have changed with a natl title + an ACC also-ran beating Ohio State in 2014) and strength of schedule, GT is more than likely to get in.
Hope for parity! An undefeated mid-major or a bunch of 0/1 loss conference winners could knock a 2-loss ACC champ out of the CFP for sure, but it doesn't seem like the most likely scenario. D1 is deeper and more competitive than ever, with a lot of second-tier programs catching up to the power teams in recruiting, coaching and development.