@Alex Demetriou, Thanks for posting in Q&A.
From your description, I know you want to uninstall Google Drive via Intune win32 but failed.
Based on my research, only silently install and uninstall command can be work via Intune win32, and it seems that you got the wrong install and uninstall command, so that you cannot uninstall Google Drive successfully.
Here is a link with correct install and uninstall command you can refer.
https://silentinstall.info/how-to-silent-install-and-google-drive-desktop/
Non-official, just for reference.
Hope it will help.
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