I'd accuse you too. If you can't read their data, then the data doesn't exist? Also, if you can't read read their data, how are the customers seeing it on their dashboard?
And of course we did that not because we are nice people (though we belive we are). We did it, because we had the hypothesis that a reputation to handle the user-data with proofable utmost respect to security and privacy would be more valuable than having access to this data.
People not believing us or accusing us of lying obviously defy that hypothesis.
In the automotive space we are leaning heavily on confidential computing primitives to make it actually impossible, for example keys generated entirely inside enclaves and only attested software can run on those etc etc.