No shit. But encryption isn't the same as zero-knowledge. Where by the time they handle the data in any way whatsoever, it's already encrypted, by you.
Do you not know what zero-knowledge means? Or are you so focused on my mentioning they'll ship data to you physically that what I actually said went over your head?
From the page you just linked:
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Implement encryption transparently so users don’t have to deal with it
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Allow users to change their password without re-encrypting their data
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In business environments, allow IT access to data without the user’s password
It's not zero-knowledge!