It seems that the Falcon and Wedge only have the explosion to out ride on the way out of the Death Star 2 after all the twists and turns of the way in.
Pacing is a premium and yes those obstacles could still be there and arguably we don't need to see them but if we saw a twist or two (and maybe a collapsing of some of the tunnel elements) it might add even more tension on the way out.
Not as many wiggles as the way in but enough to remind us that the wiggles are still there.