No, it really isn't that bad now that the rebuilding of the terminal has been fully completed.

Here is my recommended route:-

When you emerge from customs, the main public meet-and-greet area is to your right, with the SA re-check facility ahead and slightly to the left. Do not go into the main meet-and-greet area.

Instead keep to the left and turn hard left opposite the SA re-check facility. There is an up escalator here. Go up that. At the top, turn left, exit through the door and turn left again. Walk around the atrium (the public meet-and-greet area is below you at this point). Continue through the corridor lined with shops on both sides.

When you emerge from that corridor, there's an escalator to your right. Go up that, and you will be in the Terminal B check-in area. Comair check-in desks are towards the far end of the building, closer to domestic departures security.

Porters may offer to help with your luggage (less often if you follow the route I've described). Most importantly, they are officially sanctioned and harmless. They will take no for an answer. But if you use them, AIUI they basically live off the tips that they get.