Strictly speaking, one couldn't do it properly, rendering the pages as actual text for TUIs rather than graphically for GUIs, until Unicode version 13 came along, which included the necessary block graphics characters and which was only 5 years ago.
And even then one needs modern fonts like Viznut's Unscii or GNU Unifont or which cover the necessary code points (or one of the terminal emulators that algorithmically constructs block and line characters, and has been updated for Unicode 13).
Even if it couldn't be perfectly replicated, I'm sure it could've been done in some way before - after all, it's almost 20 years since someone set up a telnet service which broadcast football World Cup games as converted ascii "video" generated live from the TV broadcasts! https://www.freshandnew.org/2006/06/watch-the-world-cup-in-a...
(And I actually remember it being surprisingly watchable, you could follow what was happening in the game even though you couldn't judge stuff like players' ball control or anything like that.)
And even then one needs modern fonts like Viznut's Unscii or GNU Unifont or which cover the necessary code points (or one of the terminal emulators that algorithmically constructs block and line characters, and has been updated for Unicode 13).
* https://github.com/jdebp/unscii/blob/2.1.1f/src/grids.txt#L4...
* https://github.com/jdebp/unscii/blob/2.1.1f/src/grids.txt#L9...