This is a rule they should change to speed up the game. Just pitch 1 pitch and give the guy the walk on an Intentional walk situation.
No way.
Two reasons.
One, you never know when a pitch will be bad, get by the catcher or might be close enough to swing.
Two, no matter how little, there is stress put on your arm with every single pitch. You're taking three pitches off the pitchers arm.