Honestly, it seems to me that it's "undoing" a lot of work.

Labor Rate at dealerships around me are over $200/h. Granted the mechanic doesn't get 100% of that but 200 * 52 * 8 is nearly 600k. It seems like you could go somewhere else and get the same amount of money as Ford (or more) and don't need to worry about future salary increases not occurring.

The problem is that the mechanics are paid fixed hours for a given type of job (according to the dealership's standard for how long a given job should take). They are not truly being paid per hour. While it's supposed to encourage efficiency, you can imagine how this negatively affects the mechanics as well as the work quality outcomes.