But usually, people don't travel with their wireless chargers, or if they do, their wireless charger wire will get the same bad treatment as their phone charging cable.
As for wear on the phone side, the good thing of having a Fairphone is that it is easily replaceable. But USB-C ports are also designed to be more robust than the cable. So unless there is a defect, it should last the life of the phone.
Sadly in practice the USB-C port still is one of the weakest parts of the phone. When it becomes too loose / mushy / unreliable, and cleaning it does not help, and replacing it is not economical, then that's it for the phone.
I travel with cables every day. The only cables I've ever broken were due to some accident like tripping over it or something. I'm talking like 1 or 2 in my entire life. I have never considered cables to be a consumable part.
How on earth does someone get through one a year? Are you using it as a rope? Copper isn't cheap but should last decades, not one lousy year.
Cheap eBay cables seem to be extremely fragile inside, plastic splits often too. Weather conditions, general treatment and lifestyle will all have an impact.
I'm taking extra good care of the USB-C cable that came with my phone, because I know that USB-C standard is a mess and I don't trust the standard to be able to find a replacement that allows the extra fast charging. I've had it for 4.5 years now.
Wear on the phone side of the port should be considered too.