First sentence...that's how the engine is being worked harder.
Your definition of "working," or the process of work is not a technical definition, this is why you have a different opinion.
Work = force times distance.
Reliability has nothing to do with work.
Oil tempature has nothing to do with work.
Material temperature may impact work by a miniscule expansion of materials potentially enducing more friction, but factory tolerances generally compensate. Therefore, still negligible and has nothing to do with work.
Premature detonation is also out the window as long as knock sensors do their job. But, in your defense, premature detonation will make the engine decrease force output therefore impacting work. However, we have a thread on 87 here showing plenty of people having detonation on NA motors. I am sure the ecoboost motors experience knock also, but require premium fuel therefore less likely. Therefore a mute point.
Therefore, is a turbo engine "working" any harder than an NA motor? If anything, we are both wrong and the engine that makes more torque at a given RPM or moment of interest is "working" harder, or, "doing more work." I do not want to do integrals at the moment though.
The true answer, to me, using your definition seems to be the engine requiring less fuel and less timing to perform X amount of work is the true defining factor.
However, this argument is not about one specific engine versus another it is about turbo vs not turbo. So, if anything we were doomed by our comments and are circling a rabbit hole.
Don't mind a winking hole, don't mind a stinking hole. I do mind a winking stinking hole.
My opinion is better than yours because its mine!
I am getting a lot of notifications here though, so...
