Used to be the socket with micro USB, but USB c is much more resilient. And any damage usually occurs on the cable end and not the socket. So worst case just replace the cable
It's honestly a bit of a miracle. The whole male port design looks like it would be asking for trouble compared to a female port like lightning, but the engineering seems to hold up.
Not talking about the cable, yes you do want a durable cable, but end of the day, your cable goes bad you're out 10-20 dollars tops. On the other hand if something happens to the port you're out potentially a couple hundred dollars getting it repaired. Many people will even just replace the device at that point. The design of the lightning port seems much more robust than USB-C.
Can a steam deck be charged wirelessly? I got a wireless charge pad for my Galaxy S-10e when the charge port started being wonky and it's worked for a few years now.
If not, order a new charge port, it shouldn't be more than $15, and remember to remove your sim card before trying to disassemble the case.