There really isn't much benefit here. Better off using the cable it comes with.
The "upgraded" adapter pictured is using PV wires that have thicker insulation. This will make them look thicker, but the original cable can handle the current just fine.
The cable that comes with the unit has
insulation with a high temp rating and can easily handle the current with minimal losses. Because the insulation is not as thick, you will feel the warmth.
I would argue that the chance for a bad termination or improper soldering of the XT connector is much higher. I've soldered hundreds of those connectors in my drone racing days, and it's easy to screw up. Well, depends on your tools and which connector you're using. Some are a lot easier to solder than others. Furthermore, the mc4 connection needs to be done properly. More risk of screwing something up.
Better off just using the original adaptor. Unless someone can post proof that the original is not adequate.