Thanks. I rode today with the controls and grips moved inboard 40mm and it made a huge difference. The stock width of 780mm created a great deal of torque in my wrists when reaching for the brake levers or shifter.
Some of what you are noticing may be related to insufficient bar sweep , potentially caused by the bars rotated too far forward / backward .
Try this , tuck your elbows into your waist then with forearms horizontal and wrist in a straight riding position , swing your forearm outwards. Pay attention to the angle of your wrist , or bar sweep.
The other factor is elbow position - try placing your hands in front of you at a comfortable distance apart but with elbows by your waist. Then swing those elbows up / out into the attack position.
Now, I'm not suggesting we all need 800 mm bars with 8 degrees of sweep set at precisely 451 mm reach..... because we all have different riding styles / deformities / proportions etc.
BUT - before cutting those bars try experimenting with different control / grip placement AND bar position. Perhaps even different stem lengh. These bike have the potential for much higher speed over rougher terrain than the older mtb's with narrow bars. If you intend to explore that potential, there is a LOT to be said for modern ergonomics and riding style ( personalised for each of us)
For what it's worth, I run different bar width and sweep between my bikes, as well as varying bar position depending on the style of riding I intend to do and what part of this crippled corpse is struggling each day