I've found that over time bullshitters who produce only noise are weeded out eventually, but there's also the opposite problem of actual producers stay so quiet

I've found that over time bullshitters who produce only noise are weeded out eventually, but there's also the opposite problem of actual producers stay so quiet that upper management has no idea who they are what they do, in which case it's good to demo your work to upper management whenever possible, even if not asked to, ask the top brass for time to show them something then give a quick demo explaining the business case of why that thing you created will change how the business operates for the better. This is especially joyful if you have a bullshit supervisor and you have to go around them to demo up, it makes clear to upper management that you create and maybe your supervisor just creates noise.