Treating this the way he would have any mission from before was the only way for him to control, in his mind, the outcome.

Even if the desire is there to use that solitude, Gortash pushes it down. If he has a plan to follow, if there are things to do, and if he knows how the machine is working, then he can ignore the rest for now. The ways he has changed. How hopeless parts of it feel. How the future is about to be very short or very large and uncharted in a way that does not sit well with him, either way.

So he follows Durge out to join the rest of the group beyond. His part in all of this is pronounced already, but he needs to see all the moving parts. There might still be more he can offer.

Considering his presence does not lead to immediate shouting this time, he feels secure in the idea that he won't be attacked, at least.