The web app platform represents one of the largest, if not literally THE largest, explosions of programming and application development ever seen in the history of humankind. It also represents one of the most open and portable computing environments ever developed. It incubated a revolutionary and indispensable app for indexing, searching, and retrieving an unprecedented staggering corpus of human knowledge (Google.com); apps that have enabled hundreds of millions of people to effortlessly publish their writing, videos, pictures, etc globally and instantly (Twitter, YouTube, WordPress, Blogger, etc etc); apps that make it trivial to find most of the people you have ever known and to collapse time and space to communicate with them (Facebook, Gmail, etc etc); apps that enable you to select virtually any product imaginable and have it delivered, usually within 24 hours if needed (Amazon, Ebay, etc etc); not to mention probably millions of other more obscure apps to handle amazingly specific mundanities of office life, travel, entertainment, citizenship, finance, etc etc etc.
To look at all this and land on the conclusion that JavaScript and the web stack are fucked up‚— "a language that is universally regarded as one of the worst ever" — period, full stop, EOM, throw them out — seems aggressively contemptuous and beside the point.
It's sort of like looking at a raging party filled with some of the most interesting people you've known and some of the most interesting people you've ever heard of and complaining about the type of speakers being used to play the music.
I can't speak for the OP but I think that's roughly what they were getting at.
(Also, side note, Tim Berners Lee may perhaps have conceived the web as a place for documents, but he also seems to have since then embraced it as an application platform, not that his opinion or original vision should in any way confine what the web becomes. http://venturebeat.com/2013/03/09/tim-berners-lee-sxsw/ )