You cannot just drop RMK rails in a Khaos as the shock is too long and will bottom out the shock before it hits the front track shock.
Some shock adjustments will make a world of difference in how it performs.
Also, remeber just because one guy says one thing doesnt mean it makes **** for sense to you.
While I greatly respect turcotte, his is ultimately coming from a sno - x and freestyle background into tech mountain riding recently. He put the laydown style steering in an axys which absoltely polar opposite of what every other pro rider does ( dont ruin a good thing)
IMO, ride your sled and make adjustments based on your need, dont get too into over analyzing it ahead of time. The 165 Khaos IMO is the sled to beat for a mid to higher skill level mountain rider looking to crush tech terrain. Its super capable and able to hold a line but also much less planted so you can still ride creatively with ease.