This
>Don't celebrate that someone accidentally did something worthwhile for a terrible reason.
Doesn't track with this.
>Target your efforts at doing things that are worthwhile, not at doing things that are hard.
I think you're missing nuance.
I say, condemn those who lazily do the easiest jobs that don't interrupt their sleep at night.
Rather, we should all be trying to make the greatest positive impact within 40 hours of work a week. Those who do more are being taken advantage of one way or a dozen. Those who do less are taking advantage.
By setting a floor and a ceiling we limit abuses on both sides and,hopefully,better distribute labor.
Also,doing things that are hard for the sheer sake of it is not idiotic. It can be a positive characteristic, just like avoiding difficulty is a negative one.
I don't think it would be especially controversial to say it was done for a terrible reason. We didn't do that specifically because it was hard; those are just words from JFK's speech. We did that because the Soviet Union had beaten us to putting a man (and a satellite) in orbit, and we thought it was crucially important to beat them to something related.
What is "terrible" about advancing science and putting humans in space?
Neither of those was a reason for the project.
People realized that was idiotic? Don't celebrate that someone accidentally did something worthwhile for a terrible reason. Target your efforts at doing things that are worthwhile, not at doing things that are hard.