Yeah they didn't particularly explain anything or present much of the data from the paper the article was written about.

They posed several questions that may be helpful for depressed people but my tldr for the article was people with major depression disorder may be subject to some kind of suvivorship bias for bad memories vs good ones.

Basically depressed people may be less likely to notice/appreciate the good times and more likely to ruminate/get stuck on the bad times creating a viscious cycle

Possibly because they overuse distraction as a coping mechanism leading to them being more distracted during good times