As sibling comments mentioned, someone's you want to enforce things. Also consider it a way to avoid hidden bugs, similar to "The server chose violence" [1] [2

As sibling comments mentioned, someone's you want to enforce things. Also consider it a way to avoid hidden bugs, similar to "The server chose violence" [1] [2] as well as how much Postel's law held back interoperability (which is forgotten by many aspect of FIPS certifications) [1] https://cliffle.com/blog/hubris-reply-fault/ https://cliffle.com/blog/hubris-reply-fault/ [2] https://news.ycombinator.com/item?id=40178652 https://news.ycombinator.com/item?id=40178652