It's utterly ridiculous that engineering and efficiency
    decisions are so deeply affected by whether or not the
    largest search engine will properly index your content.

There being more sites that can only be crawled and indexed well if you run js is probably good for Google relative to competitors. Anything that makes crawling the web harder increases the barrier to entry, making it harder for sites like DuckDuckGo to serve search results from their own crawl.

(Disclosure: I work for Google, on unrelated stuff.)