That’s no small number at Google scale. Google processes around 8.5 billion searches per day, so one can assume that millions of people performing searches through Google aren’t using JavaScript.

Software javascript JavaScript now mandatory for Google Search, Google confirms Static pages are gone, and SEO checking tools don't seem to work anymore By Alfonso Maruccia January 21, 2025 at 8: ...

Google still recommends you avoid using JavaScript for canonical tags but if you must, Google provided these recommendations.

Google says, from an SEO perspective, there’s no need to worry about using JavaScript when building websites.