This does not change the conclusion of the story when God clearly states that Eliphaz and friends have not spoken rightly about God. You might even say, they spoke without any substance, any real connection to their words.
Consider Isaiah 29:13 in light of Eliphaz, "Wherefore the Lord said, Forasmuch as this people draw near me with their mouth, and with their lips do honour me, but have removed their heart far from me, and their fear toward me is taught by the precept of men."
So what if Eliphaz said what was "right"? In the end, he was wrong. That was God's conclusion. Also, satan is recorded as quoting Scripture, too, so...
Consider Isaiah 29:13 in light of Eliphaz, "Wherefore the Lord said, Forasmuch as this people draw near me with their mouth, and with their lips do honour me, but have removed their heart far from me, and their fear toward me is taught by the precept of men."
So what if Eliphaz said what was "right"? In the end, he was wrong. That was God's conclusion. Also, satan is recorded as quoting Scripture, too, so...