There was a comic artist I used to follow when I was doing more front end work, who would blog about his craft. One of the things he said that really hit me was talking about silhouettes. The visual noise in certain eras of comics make them very unapproachable. If you repainted your strip by flood filling everything with black, would people have any clue what's going on?
One of the things I'm seeing in some of these examples is icons with the same silhouette doing nothing or less than nothing for scannability. This is the same problem AWS has. Their dashboard is just noise, because the icons are neither visually distinct nor descriptive of the project.
I've also seen some of this same problem with card and board games as well. You can see that some designers care about accessibility. This type has both a distinct color AND shape so colorblind people can see it, all the icons are big enough that people can make them out sitting upside down in front of the person across the table from them, even if they're over 40.
His first example, Google Sheets, does well by this metric IMO, but the next few are kinda bad.