That's true, however Apple said that: “The encrypted chunks of the file are stored, without any user-identifying information, using third-party storage services, such as [Amazon] S3 and Google Cloud Platform.”
So I mean yeah, you're going to be using a service provided by Google, but the main complaint about their services is privacy, which in this case does not apply.
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AFAIK iCloud is on top of Google Cloud Platform so you wouldn't be really avoiding Google.
That's true, however Apple said that: “The encrypted chunks of the file are stored, without any user-identifying information, using third-party storage services, such as [Amazon] S3 and Google Cloud Platform.”
So I mean yeah, you're going to be using a service provided by Google, but the main complaint about their services is privacy, which in this case does not apply.