The search for a leads many down a rabbit hole of broken links and fake tools. Now you know the truth: Google doesn't link it on their homepage, but the file is sitting on their dl.google.com servers, waiting for you to extract the URL from recovery.conf .
For advanced users or those needing to create media without the recovery extension, you can download the latest official raw image directly from Google's servers. Download ChromeOS Flex (.bin.zip) Chrome Os Flex Download Iso 64-bit Offline Installer