This seems pretty unlikely to surface. Saying "oh you do that by doing these 3 things" in Slack, or going off and fixing a broken thing in a test environment, might save someone else hours or days, but they won't report somewhere "this person saved me hours", particularly if it happened 3-12 months ago (whatever the review cycle is). Combing through emails and commits is also just pretty unlikely to happen.
* The impact is actually much smaller than you initially think
* You're not vocal enough about that, or that's just one-off thing (high performers usually pretty consistent)
* You're in a bad environment where good work isn't getting recognized
I've did exactly that and my coworkers keep know how that benefits them, so it's not impossible. Anyway, being vocal on what you're doing or achieve in remote work is also crucial, if the environment cannot discover your achievement easily.
I think the point is that saying "there's only one parameter to measure" elides all the difficulties of measuring the different ways people can be effective in the workplace.
