Community consensus on "fitness-style" workouts like these is generally positive for building raw technique:
Elias started at 60 BPM. The PDF demanded "perfect economy of motion." Every time his pinky flew too far from the fretboard, he had to restart the measure. By day four, muscles in his forearm he didn't know existed began to thrum with a dull ache. It wasn't the pain of injury, but the "gym soreness" of a hand finally being forced to work. The Second Week: The Plateau
: Routines like Mile High Shred's Guitar Workout suggest starting slowly with a metronome and increasing speed by no more than 5 BPM once an exercise is performed perfectly .
: The First 100 Guitar Exercises covers finger dexterity, basic chord changes, and strumming.