I remember buying stock in the company, and the same week, their big update rolling out, and quite literally burying my friends and their stories underneath the "overcrowded pile of clickbait" mentioned in the article. That, I believe, is where Snap really went wrong, and what drove 3 million users away from its platform.
When you combine Instagram's own story implementation with the fact that Snap's focus seems to be mainly on Discover from this point, it seems unlikely to me that they'll ever regain the interest of people who abandoned it back in February.
It will be interesting to see which changes they roll out in the months to come, but honestly, as long as the Discover page has even less meaningful content than a Taboola "Content you May Like" block, I can't foresee it being a real draw in for new users.