This is not the case, but I do still disagree with the “trust me bro” approach to a feature rollout that does send data your somewhere, encrypted or not.

Edit: For those interested, the reason it’s not the same as a backdoor is that the result of the computation done on HE data is itself still encrypted and readable only by the original owner. So you can effectively offload the work of a certain analysis to a server that you don’t actually trust with your keys.