No and Yes. Look at the other pins. They are pristine. The overheated pins have lost their protective finish so they will probably develop oxidation fairly rapidly if the right conditions exist.
More importantly, something caused them to overheat so that needs to be corrected.
Yes, but it means finding the right parts and having some soldering skills. Those pins can be replaced. There will be a small tab on the metal pin that retains it in the housing. Usually, a small jewelers screwdriver can be used to press it in and push the pin back out of the housing. Then cut it off, strip the wire and crimp the new pin. If you don’t have a crimper, a needle nose will suffice to form the pin around the insulation and stripped wire, followed by soldering to finish the connection.
You may also be able to find what is called a “pig tail” which is that plug already loaded with pins and wires but only about 6" long. Then you can splice it in place of the existing one. Or just extract a couple of the pins that are burned and replace just those. There are options…