As someone on the fighting end of scrapers, this is absolutely not true. If anything I should bais towards v6 as the traffic is on par better than v4

Every scraper I have blocked seemed to use IPv4 primarily. Only when IPv4 gets blocked, some of them fall back to IPv6. Others just stay dead.

With AI companies using botnets ("residential proxies") for scraping, they're probably going to be in the 50% that doesn't use IPv6.

Citation needed. These numbers are quite consistent with the growth pattern that started well before usable LLMs were even a thing.