The muscle of doing pointless bullshit without understanding that it’s pointless… are you kidding? This has got to be the most troll comment I ever saw in this website.
It’s the muscle of being able to quickly orient yourself in sudden problems and drive towards useful solutions in a focused manner.
And to be fair, if the product line hadn’t been thrown out before I started, the project would have been useful in either A) fixing the product or B) providing justification to scrap the product line (probably the more likely outcome)
And I developed a nice tool that got used somewhere else later useful.