Is a used bike a good idea for a casual rider? Is this 2016 SWorks a good deal?

I recently moved to the US and want to do some trail riding on the weekends. Nothing hardcore, just enough to have some fun and get some exercise. I would rate my experience level as an experienced novice.

I've never bought a bike before, last bike I had was bought by my parents when I was in my teens, so I'm not really updated on what's out there. Is buying a used bike worth it? Or would it be better to get a new more basic bike for the same price?

My budget is around $1K USD. And I found this bike online that looks good and has an xl frame which is a must. Is it a good deal at $1,200?

Seller's description:

•low mileage
•shimano deore XT back break
•shimano deore XTR front break
•newly bled breaks
•31 pounds
•22 gears
•fox floats back suspension
•rock shocks rs-1 brain front suspension
•shimano xtr gears
•newly replaced front suspension
•maxxis tires
•dropper post seat
•2016 make
•specialized epic s-Works downhill Racebike

Photos:
https://ibb.co/tZct25q
https://ibb.co/vqYcYZ1

Thanks