The web is human-accessible content hosted at stable linkable URLs. If you send fragments of ad hoc data and rely on just one piece of code that might be able to reassemble them into something usable on a couple out of all browsers, that's not a useful contribution to the web, it's merely a client/server app which tunnels yet another nondisclosed protocol over HTTP. Somehow we ended up with a new crop of devs who don't see how terrible client/server was (your data is trapped in a silo, there's only one app capable of doing anything with it, it sucks, and you can't fix it) or why the web was such an improvement, so they're abandoning it and we're all going to take a huge step backwards.