That's immaterial. There are more people comfortable on their right than left.
The wrong-footed FB offers the chance to avoid getting pressed towartd the touchline and into safety fr the opposition. It also allows more angles going forward. It can also be used to effect if you play inverted FBs putting a FB in the cntral areas on their stronger foot.
Lamaprd has been starved of options in defence, and playing inverted FBs could add effectiveness to our weak CM area.
In fact, using an inverted wrong-footed FB could allow Patterson to be played ahead of such a FB as it's easier to get back behind the ball for the FB in central areas than if they get up the pitch in the opposition half.