My website was built with such brand-name technologies as "HSTS" and "Viewport Meta"[1]. Hmm. I guess it's meant more for web applications that leak their implementation details or reference vendor resources, somehow?
I can see that you're using PHP, on nginx/Ubuntu, hosted by Digital Ocean, and likely purchased your hostname via Google Domains. Your email is via Google Workspaces. That's pretty useful information.
[1]: https://builtwith.com/yossarian.net