peterh337 ,
Sigh.... yet more un-necessary Apple bashing.
To be frank, browsing websites offline is not something your average punter is ever likely to feel the urge to do, whether they use Apple, Android or something else.
As for your "Politburo didn't intend" comment.... when was the last time you were involved in quality software development ? Adding a feature like offline browsing takes more than a couple of lines of code.
Hence the functionality is not built-in. Submit a feature-request if you want it to be on their radar for future developments, just like you would with any other vendor.