As long as there is no accepted non-vue replacement for the server side rendering technology, one has to assume that WP will replace php based rendering with Vue templates on a large scale, even for the static content. However, Vue templates require usage of node.js. I couldn't find any standalone serverside vue template parser/renderer written in something like C++, Rust or Go. So if they adopt Vue, they'd still be locked into a project ran by a single company, namely v8, which they listed as one of the things they wanted to avoid.
Also, why does the hn clone that claims to be statically rendered using vue still display spinning icons during page load [1]? I'm asking because it's not just any vue js app, but one mentioned in the official server side rendering docs of vue [2]. Edit: doing view-source on the hn clone shows that it's really just loading the comments from the network. Not sure what definition of server side rendering the docs are working with, but that demo doesn't give confidence.
Will I get spinning icons on wikipedia pages in the future? Will it be like discourse where the scroll bar is hijacked?