I need to shift over to something that I have enough expertise in to comment with any authority. In music recording and performance, there is a saying I picked up from a respected Nashville songwriter/artist: "Let 95 percent of the performance be 95 percent as good as it can be; you’ll go blind chasing the last 2 5 percent categories." I’ve always kept that in mind while picking the shit out of my own performances.
A good baseline "on demand" standard is getting 95 percent of what you’re trying to get, 95 percent of the time—under pressure and the microscope of observation.
In other words, setting a 100 percent threshold as any sort of upper limit to "on demand" is going to plummet your performance standard into the basement. Honest to God, even just playing a 2-octave C major scale perfectly, every. single. time. is beyond the abilities of most pro musicians. Things happen; a door slams down the hall, your leg cramps, you brain fart and cause a minor bobble. It’s objectively no easier to do basic things at 100 percent all the time than to play a Bach fugue at 100 percent all the time, so may as well shoot for 95/95 on something extremely challenging and worthwhile.
Or put differently, I’d rather shoot 95 on the FAM qual cold than 100 on some low-fruit CCW rubber stamp job.
I’m more or less on the same page as clusterfrack.