I would want to use a search engine that does not perform JavaScript interpretation, image interpretation, OCR, etc. (This is not the same as excluding web pages with JavaScripts from the search results. They would still be included but only indexed by whatever text is available without JavaScripts; if there isn't any such text, then they should be excluded. This would also apply if it is only pictures, video, etc and no text, then they also cannot be indexed, whether or not they have JavaScripts.)
Luckily none of these things are mutually exclusive.
Thanks to all the SPA idiocy you will miss enough content to matter if you have zero JS interpretation, so you would want to let the user choose which indexes they want for a query because sometimes you need these other resource types to answer the query.
