As Louis Rossmann also said, using a single port for both charging/moving data and listening music increases the wear on the port. They’re just made to wear down faster with the absence of the audio jack port.
Plus it’s impractical, as it occupies the type c port.
When you plug in in to charge, the device is at rest. When you plug in headphones, there’s a high chance it is in a pocket or otherwise in a state where the device is moving which will be a lot more wear than just idling charging.
I dont know, but if you also use it to plug in earphones you may double the use.
Im using my type c port phone for about 3.5years so far (I rarely plug headphones in it though) and the port seems ok.
But either way, this extra wear down is simply another negative aspect of this move and I think so far the disanvantages outweigh the advantages (also I think it’s just so that they can sell their wireless earphones and on a lower degree support planned obsolesence).