No. In fact, Jason Vorhees has been played by many actors & stunt men. The most famous, & probably the best Jason ever, is Kane Hodder. He's the only person who has played Jason Vorhees more than twice.
Jason Sargeant has: Played Jason in "The Crack: The Robot" in 2011. Played Jason in "The Crack: The Visitor (feat. Charlieissocoollike)" in 2011. Played Jason in "The Crack: The End" in 2011. Played Jason in "The Crack: Christmas feat. Sam Pepper" in 2011. Played Jason in "The Crack: The Meeting" in 2011. Played Jason in "The Crack: Mac vs PC" in 2011. Played Jason in "The Crack: How Not to Be Bored" in 2011.
Jason Dilaurentis has been played by two different people. In Jason's first two appearances he was played by Parker Bagley. However since then he has been played by Drew Van Acker.
Jason Pava has: Played Jason Allgood in "UIWA 2000" in 2000. Played Jason Allgood in "PWG: The Debut Show" in 2003. Played Jason Allgood in "PWG: Taste the Radness" in 2004. Played Jason Allgood in "NJPW-USA Toukon Fighting Spirit" in 2004. Played Jason Allgood in "AWS: A New Beginning" in 2004.
Jason Daugherity has: Played Customer in "A Wager of Testament" in 2008. Played Jason in "Hiccups" in 2012. Played John in "Tamale" in 2012. Played Boss in "IT Guys" in 2012. Played Jason in "Time Flies..." in 2012. Played Rick in "3 Wishes" in 2012.
The original Jason Voorhees was born June 13, 1946 and was 62 years old when frozen in 2008 (Jason X). Following his resurrection in the year 2455, the nano-constructed Jason was apparently cremated by reentry into the atmosphere of the uninhabited Earth, returning permanently to Crystal Lake.
Jason Lee Dear has: Played Jeff in "Always Again" in 2011. Played Gary in "The Curse of Turan" in 2011. Played Man in "The Night of the Procession" in 2012. Played Teacher in "Shameful Deceit" in 2013. Played David in "Acquainted" in 2013. Played Nicholas May in "Gallows" in 2013. Played Client in "Pleasure Beach" in 2013. Played Persontree in "The Straight Jacket" in 2014.
Jason Selvig has: Performed in "North Palm Wrestling" in 2008. Played Trevor Everest in "Wunderkrafthaus" in 2010. Played Jason in "Northeast" in 2011. Played Dave in "Sleepwalk with Me" in 2012. Played Allen in "Red Right Return" in 2014.
Jason Ott has: Played Ben in "Unfinished" in 2007. Played Jason in "Political Disasters" in 2009. Played Jack Browning in "Bloody Slasher" in 2011. Played Jack Browning in "Tender Romance" in 2011. Played Jack Browning in "Gritty Noire" in 2011.
Jason Frazier has: Played Butchie in "Homicide: Life on the Street" in 1993. Performed in "Drinking Games" in 1998. Played Jason in "The Evidence" in 2006. Played Young Man - Bus Fight in "The Pursuit of Happyness" in 2006. Played Daniel in "The Beginning" in 2012.
Jason Levinson has: Played Himself (2001) in "Chat Zone" in 2001. Played R2D2 in "For Love of the Film" in 2005. Played Mr. Ellington in "Gossip Girl" in 2007. Played Jason in "Pointy Teeth" in 2012. Performed in "Pointy Teeth" in 2012.
Jason Francis has: Played Jason in "Rabbit Fall" in 2007. Played Detective Jones in "The Heart" in 2008. Played Doctor in "At Sixes and Sevens" in 2009. Played Man in "7 Lines" in 2010. Performed in "The Diavolo Project" in 2011. Played Tough Bloke in "Supercollider" in 2013.
Jason Marriner has: Played Gangland Lad in "Rise of the Footsoldier" in 2007. Played himself in "Kill Arman" in 2009. Performed in "Jason Marriner Football Hooligan" in 2009. Played Jason Marriner in "Carlton Leach: Real Rise of a Footsoldier" in 2009. Performed in "Ultimate Gangster Collection 2" in 2010. Performed in "Ultimate Football Hooligans Collection" in 2010. Played Jason in "Killer Bitch" in 2010. Played Jason in "Mob Handed" in 2014.