/user/fede9niko is an interesting guy. He writes articles on Medium [2], and then spams them to a bunch of subreddits.

Articles of his:

• No World for Straight Men, spammed 13 times — depopulation conspiracy
• Where is the love?, spammed 19 times — depopulation conspiracy
• The Essential Guide to Alt-News Activism, spammed 47 times — new world order, antisemitism
• Humanity Prepares for a Momentous Leap, spammed 8 times — god I don't know, some drivel

Reddit defines spam as "> 10% of someone's content is their own links", which he clearly counts as.