("Scraping Fish" owns this site but it isn't disclosed anywhere, and this guy "rustdeveloper" seems associated with them, most of his comments push that service)
This is correct, my friends from Scraping Fish are hosting https://compareproxy.com to help people find proxy for web scraping. I'm happy to "push" for Scraping Fish as I'm also a satisfied user who received a lot of help from the founders for my web scraping projects.