I think the docs [0] are a good way of evaluating the article's high horse claims, and as far as I looked around, I'm not seeing anything new nor interesting. The author seems to be more or less just reimplementing Vue from scratch. This makes the whole condescending tone funny, if not sad.
Vue is built on web standards just as much as Nue is. That is, web standards are there underneath, but both libraries add custom sugar on top. A good example is iterating over list items in Nue [0] and in Vue [1]. Neither is "pure web standards with nothing else", in fact it's exactly the same custom stuff, save for what keyword they chose to use.
In this light, I would say Nue's claims about standards first and only are pretty misleading, it does the same exact thing as existing libraries do.
I only know Vue as "like Svelte, but without compiler goodies".
So to me a "Vue but built 100% on web standards" at least has a unique selling point.