I dont think anyone here is advocating 300 knots at 10nm as an ideal scenario.But pilots must know how to adapt to an ongoing situation.He knew speed was the key,not the profile.Speed first,then recapture the profile.If you take off with the wrong runway in the FMC and go for LNAV and it turns you right when you should be going left what do you do?You adapt to the situation;the failure to see that the FMC was incorrectly programmed was a small procedural error.However,if you then religiously follow the FD commands,your error just got very big.
Same principle applies to this case;it would have been a small procedural infringement to forego the profile in order to control the inertia.The bigger and far more dangerous error was doing what he in fact did,ie.maintaining the profile because thats what the book says you must do.