The assignment you have for class states that you need to use SCHOLARLY sources, mainly articles from journals.
What does Scholarly mean, though?
Before you get into the content of the article you found, let's compare the basics of Popular and Scholarly articles.
You look up information all the time on your phones and computers at home using Google. Knowing that there are different types of information can help you find credible sources that answer your questions. It is also important to remember the context in which you are doing your own research. The Popular vs. Scholarly comparison is not a Bad vs. Good comparison. Popular sources are not inherently "bad", and scholarly sources are not inherently "good".
Scholarly articles present peer-reviewed research about specific topics. When your assignment calls for scholarly sources, you need to know what those look like in order to complete the assignment successfully. This applies even when a grade is not on the line.
However, when doing research there are many occasions where it would be appropriate to use a "popular" or non-scholarly source. You might need background information or want to see what people's opinion are on the topic you are researching for class. Turning to a popular source like a magazine, newspaper, or reputable website (i.e. Time Magazine, The Atlantic, The New York Times, NPR, etc.) would all be good options in those cases.