E2E encryption is not vulnerable to MITM. E2E encryption is vulnerable only to how many keys there are and who has access to them.
https://en.wikipedia.org/wiki/End-to-end_encryption
What if google told you they also have a key? Does that change the above answer to the question?
E2E encryption is not vulnerable to MITM. E2E encryption is vulnerable only to how many keys there are and who has access to them.