Nooo because in order for this to work,

"Bob will generate a public key (B) and private key (b), as will Alice (A and a). They then exchange their public keys, and the shared key will then be a×b×G, and where G is the generator point on the elliptic curve."

Okay so Bob sends bG to Alice and Alice sends aG to bob, but then that means Alice can do result/G = b and Bob can do result/G = a and then on NOSTR start posting notes as each other's identities...right?