Somebody over on reddit tested different user agents: https://www.reddit.com/r/g...

trehalose on May 30, 2019 | parent | context | favorite | on: Switch from Chrome to Firefox

Somebody over on reddit tested different user agents: https://www.reddit.com/r/google/comments/btysl9/google_have_...

It seems pretty clear from the fact that nonsense user agents like "TotallyNotMicrosoft" and "IE6" worked, that there is a blacklist, not a whitelist.