Keith Morrison and Sean Boddy nailed down the problem in the question you linked. Anyone relying on an active sensor system will have the use of that sensor system detected at a greater range than it will allow them to detect targets.
Imagine that you are at one end of a L-shaped tunnel, not shining any lights and not making any noise. If someone at the other end of the tunnel shines a light then they will not see you but the light they are shining will be visible at the bend and you will know they are there. If they speak then the sound will reflect around the corner and you will here them. If they send out a pulse of high frequency sound that their suit can read then your suit can detect it.
Passive detection systems are preferable where possible, but passive sonar may be difficult where there is presumably enough constant wind to keep large quantities of dust suspended in the air. (Without the wind the dust will settle and your environment will not be as described.) So if the only alternative is active detection systems then don't have the soldiers emitting the active signals. Instead, deploy a network of tiny mobile sensors and/or drones that emit the echolocation pulses and transmit the battlefield picture to the soldiers in their suits. That way, all the enemy knows when they detect a pulse is that there is a sensor in the area, they don't know whether it is a decoy, forward recon or providing targeting information to a squad of soldiers just around the corner.
The same principle applies whether you are using sonar, radar, or any system that relies on emitting a pulse and detecting a return. If sonar echolocation suits the flavour of your world then go for it. (Guessing that the reason you want sonar may be due to the suspended dust of the world interferes with getting returns in much of the EM spectrum, whether by accident or design.)
Note that all of this is assuming relatively symmetric warfare. If the humans are fighting against a non-sapient or primitive enemy that cannot detect the source of high frequency sound bursts then the echolocating humans can operate with impunity.