So your 99% number is nonsense.
And E2E encryption is to stop MITM attacks which are quite common if you are using untrusted networks e.g. open WiFi networks.
Those could also be avoided with encrypted (but not E2E encrypted) messages. E2E is supposed to be stronger than that.
So your 99% number is nonsense.
And E2E encryption is to stop MITM attacks which are quite common if you are using untrusted networks e.g. open WiFi networks.