Hi @ryivhnn. Having a local workshop that you trust can be a great advantage. If the work is of a good quality and the price is fair then that's wonderful but I guess like any relationship, that trust has to be earned and not assumed.
The maintainability of modern cars is an issue. Even with the appropriate training, it can still be the case that without the proprietary costly diagnostic equipment, you can still be left in the dark.
Happy motoring!