Yeah the flood of these Chrome UAs with every version number under the sun, and a really large portion being *.0.0.0 version numbers, that's what I've tended to experience lately. Also just kind of every browser user agent ever:
There were waves of big and sometimes intrusive traffic admitting to being from Amazon, Anthropic, Google, Meta, etc., but those are easy to block or throttle and aren't that big a deal in the scheme of things.
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36", anyone?