GrapheneOS is a Google OS - it's a slightly modified Android developed by Google and continues to be dependent on Google for updates.
(Murena /e/OS is similar. No, slamming the downvote button won't make either of them any less Google dependant OSes.)
you are being downvoted because the article considers de-googled versions of android acceptable. and neither are dependent on google in the sense that even if google stopped publishing android source altogether they could continue to develop the versions they already have. that's the whole point of Free Software and Open Source.