While I watched the DM-1 hatch opening, I noticed that astronauts use the wired microphone to talk to Huston. It was particularly strange seeing that even because during hatch opening, they were required to wear rebreathers and that meant quite a workaround to speak to ground control.
that can be seen in this video around 1:46 mark DM-1 opening
So, why not use a laryngophone? they are commonly used in the military, they are military hardened and definitely much more comfortable. also, they are wireless and since they don't require access to the mouth they can be weared with gas masks without problems.
Also, they could enable an astronaut to talk while having both hands on an experiment.
So, why do they still do "wired"?