Yes, everyone will immediately pick on 128 bits for symmetric encryption but I suspect the vast majority of people won't pick on the fact that Curve25519 offers

Yes, everyone will immediately pick on 128 bits for symmetric encryption but I suspect the vast majority of people won't pick on the fact that Curve25519 offers less bits of strength than 256 bits symmetric encryption, or they won't care. So you'll still avoid a lot of questions and have a better marketing box-ticking scorecard, will probably still be more secure.