You realise that most encryption can be decrypted by third-party? Many cryptography libraries have huge flaws, even the Handbook of Applied Cryptography was encouraging using Damgard et al's parameters for prime selection even though the original authors never claimed the accuracy that others assumed (without basis). Even now, can you guess how many cryptography libraries would be broken if someone found a BPSW pseudoprime? And we have arguments that they probably exist, but crypto developers just ignore it either out of ignorance or laziness.

In summary, it's all theatre, you just want to deny access to enough parties that it makes you comfortable.