We have software to detect such violations. In addition, seasoned HN users figure out what's going on and react quite aversely, as you demonstrated. Once such a ring has been identified, if the story is still on the front page, users will flag it (as happened here) or moderators will penalize it. Plus we often ban the accounts and site involved.
This case seems to have been at least in part an honest mistake. More importantly, the tool seems to be of some interest to the community. Because the most important thing on HN is to have interesting things to discuss, I'm going to reduce the penalty on this post and let the discussion continue.
I hope everyone realizes that this is a rare outcome. The more common outcome is that we ban the accounts and sites involved. So please don't do this!
Is this your github https://github.com/Livin21 ? I see this person is from Cochin, India [1]. I then see the facebook page linked to on your website [2] mentions your founder [3] who happens to be from Kochi [4] which is the same city [5].
This is quite odd, no?
[1] https://imgur.com/a/tBCmKGY
[2] https://imgur.com/a/RZgKg9Y
[3] https://imgur.com/a/fbMnrrh
Sometimes, when I've worked on a small tool I want to share with others, I've found that telling people about it at local meetups is the easiest and quickest way to get people to try it out.
Maybe something similar happening here?
Or they just happen to work in the same building, or same coworking space, etc.