With completely wireless earbuds, the rule is: when the battery fails, they have to be disposed of. Not so with the Fairbuds, that allow you to replace batteries in just a few seconds. Combined with a repairable design, the earbuds should therefore have an extremely long lifetime.
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).