Ok. That quotes a tweet by Cloudflare's CEO. IDK what his qualifications are, but his conflict of interest is obvious enough. Real quality journalism there.
ETA: I looked at what the Cloudflare CEO said again. To be fair to him, he is not actually claiming that Googlebot collects AI training data. He's talking about the AI overview, which is a search feature. The data for search features is collected by Googlebot. I'm not sure why someone would want their link listed in search but not appear much more prominently in the AI overview.
Here's Google technical documentation on its crawlers: https://developers.google.com/search/docs/crawling-indexing/google-common-crawlers