I think it's better just to call them layman's writing instead of white sugar, as processed sugar is basically a toxin. Understanding layman's writing will get you nowhere in the real world, except as a stepping-stone to further knowledge. Sugar, on the other hand, is actively harming people and is not a stepping-stone to healthy living.
For journalism, relevant, incisive, investigative journalism is gold.
Much of what's written is simple pro-forma, filler, stenography, or worst of all: republished press releases -- APR and VPR (audio / video press release) for radio and television, the original "fake news": https://www.sourcewatch.org/index.php?title=Fake_news
A key question for me is whether the article intends principally to inform rather than persuade or distract. Virtually all current business, "style", entertainment/culture, and big-ticket sales (real estate, autos, travel) "reporting" is thinly veiled advertising. A large fraction of political coverage is either stenography or persuasive rhetoric.
Writing with the reader in mind, or at least with the writer's (or client's) ego / wallet, out of mind, is rare.
Thus both provide a less than ideal introduction into any novel subject, though I see most popular articles as less 'toxic' than most research articles, especially towards encouraging further interest in the neophyte reader.
They take multiple months of research.
What should I call them?
I know this is not true for all papers or topics but it does seem common enough that I run into it frequently.
That's the problem right there. Articles are the white sugar of information. They contain a tiny amount of actual info, but not enough to be useful in any meaningful way. If you truly want to learn about something, read a book or a paper. Articles will get you nowhere.