I Think many people Social Engineer without knowing. I do it very often. But not at work. Well maybe once an awhile.

I also run a Forum just for Social Engineering If you'd like to check it out.
https://hmsef.net/I think you forgot to read the title of this website, it's The Ethical Hacker Network, not "Illlegal or Unethical Hacker Network". Your site promotes the usage of "fake receipts" and the motto is: "We get free shit". It sounds more like you are scammers abusing how e.g. corporations function in the States, etc.
Social engineering, does not have to be applied at a malicious / illegal / unethical level.