Hmm that's not 100% correct. Google still does apply this to some domains. Blogspot is a good example of this. and the s3.amazonaws.com is the same domain for

Hmm that's not 100% correct. Google still does apply this to some domains. Blogspot is a good example of this. and the s3.amazonaws.com is the same domain for EVERY bucket, so it definitely has link authority. The thing the article missed is that most of these medium/s3/blogspot parasites are a few years old. While a year ago you could chuck up a Medium blog and rank it in under a month, with the most recent Google update, it takes a lot longer to see things ranking. However yesterday I saw an exception to this, as this Medium account ranked in literally 2 days without any backlinks (the page has since been deleted): https://i.imgur.com/8lPHUYs.png https://i.imgur.com/8lPHUYs.png Parasites do work well, you just need to find the right 'secret sauce'. Some people can still spam 1000's of backlinks using Xrumer and/or GSA or slowly drip feed cheap PBN links. The article shows looking for keywords such as 'HostGator coupon' or 'Clash of Clans hack' and you'll see that the top 10 results literally change on a daily basis. People are doing of lot 301 redirects (buy a expired domains with lots of high authority backlinks and 301 it to your URL) and then block the bots for SEO tools like Ahrefs/Majestic/SEMRush etc. so other SEO's can't find their backlinks.