Right, but it doesn't mean they can't play RW.
This year, here's a list of players listed as playing their off wing
]Lefthanded playing RW|Right handed playing LW
Jaromir Jagr | Filip Forsberg
Marian Hossa | Christian Thomas
Pascal Dupuis | Taylor Beck
Johan Franzen | David Perron
Rene Bourque | Andrew Desjardins
Alexandre Burrows | Blake Comeau
Martin Havlat | Alexander Semin
Marian Gaborik | Thomas Vanek
Scottie Upshall | Joffrey Lupul
Loui Eriksson | Patrick Sharp
Brad Richardson | Shawn Thornton
Michael Grabner |
James Neal |
Mats Zuccarello |
Michael Frolik |
Patrick Kane |
Josh Bailey |
Gustav Nyquist |
Jakub Voracek |
Gabriel Bourque |
Jordan Caron |
It's not that uncomon. Some very good players do it as well. (off note, our own Hossa played RW as a Lefthanded shot, and is considered one of the best two way wingers in the league, and Havlat, another former sen, was playing RW for us, despite the team having too many Right wingers ahead of him).