No, that's B.S.!! What you do is screw your full-length die into your press only as far as it takes to resize once-fired cases down enough that you can close the bolt on your rifle without too much effort before loading up the cases.

The less you work a case, the longer it will last. Some brass fired in a different rifle may fully enter your rifle's chamber without a lot of heavy sizing, and some won't. Test it first, before getting too heavy-handed in the resizing department!!