He can get some parts, but most of them he cannot source even using broken donor Logic Boards (most of his repairs for older Apple laptops involve salvaging used components from broken Logic Boards). It all depends on which component on the Logic Board is bad.

I follow such a guy on YouTube and he has to tell his customers that those systems are unrepairable most times. The problem is it is impossible to get any replacement parts to repair a Logic Board on a USB-C Mac because Apple has made it impossible for independent repair shops to perform such repairs. Yes the Logic Boards on those older Macs were much easier to repair and having an independent shop actually fix the broken Logic Board was possible most of the time. Maybe you can find someone like this that is fully qualified and experienced, but charges less than out-of-warranty work at Apple. He was an authorized Apple service business as a one man shop until the Apple Stores rolled out everywhere and Apple pulled the repair business back to their own teams. A friend referred me to this independent repair person and I have been very happy with him.

I decided to fix mine and it lasted another couple of years. The repair person found a refurbished motherboard for my MacBook Pro and I saved $400 compared to a new part.

Macbook pro 13 logic board repair