The headline also does not say the same thing that the post claims!

Headline: “15% of content” --> every 6th or 7th post or comment is a corporate troll

Article: “15% of subreddits contain” --> the vast majority of subreddits contain no troll content

Actual study: [file not found]

I also cannot find any Pew research study resembling the one described. The link is a 2017 report that doesn’t mention reddit.