I’m not the poster you asked, but I was extremely surprised when my article on what it took to write a native iMessage client for Windows 10 and the roadblocks and traps Apple left to stop it from happening didn’t get more than a handful of votes; it really seemed to me to be exactly the mix of things that HN readers normally ask for more of.
https://neosmart.net/blog/2018/imessage-for-windows/