You could say it is implicit.
Any other efforts you have to skew this are just spin.
You can say it's "implicit" -- but there are also many other lies you can tell. The paper describes a mechanism where nodes verify and enforce the system's rules for themselves, using POW for ordering. It doesn't describe a system where nodes stop enforcing their rules if the are overpowered, nor is that how Bitcoin was written.
the most senior core devs such as Gavin and Jeff, reject the settlement system.
"The fundamental engineering truths diverge from that misty goal:
Bitcoin is a settlement system, by design." --
Jeff GarzikAhem.
And the claim that Jeff and Gavin are more senior is bunk. Unless you mean to say that someone whos first changes were merged a few days earlier, regardless of how much involvement they've had since is "more senior".
Eck. Bummer.