If you want a world where the data you present like this matters, seed it.
Even if google doesn't use it, the collective internet applying this kind of metadata makes the web fertile for non-LLM-scraping competitors to provide an alternative option.
Rolling over to google only ensures that they remain dominant, with a high bar for competitors, and driving them to use the same technologies.
Interestingly, there is llms.txt (like robots.txt) which is a new emerging standard to aid AI in crawling and gathering data from your website.