Dex skills are just as significant and int for the wizard/artificer is not going to be as generally useful as dex. No matter how you slice it, there are going to be far, far, far, FAR more dex saves required over the course of a campaign that int saves, so even if you can get into up to dex in all the other areas(it fails badly for AC), then int still loses based on saves alone. Dex is the better.
I don't. Wizards has mislead us more than once over the years. I'm not taking his word on something that is very clearly wrong.