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Chromium contains google services, and significant google integration. It does not contain any of the closed source components, including some security components and DRM.

This is absolutely not the case.

You can find some of the some of the patches here but there's more patches in the parent dir - https://github.com/Eloston/ungoogled-chromium/tree/master/pa...

There's a lot of telemetry, and a few other services such as time checking.

The features you're mentioning include the user syncing, translation, and DRM platforms (though you can add widevine to chromium, you cant add the others). Those are not the only things that call home to google.

This is Factually Inaccurate, there are many services in Chromium code that require Google services (and a special API key for them that is effectively impossible to use at scale)