While I do find GOS drama a bit annoying, they aren't wrong about the lacking security of many AOSP forks. iode and /e/OS have a history late patches for security vulnerabilities in both the OS (https://web.archive.org/web/20241231003546/https://divestos.org/pages/patch_history) and for the forked apps they bundle with it. Each Android monthly and Chromium patches usually contains dozens High Risk CVEs, so taking a month or 2 is unacceptable. Neither are good for privacy or security.

See a comparison between some Android ROMs here, especially noting the update speed section: https://eylenburg.github.io/android_comparison.htm