Doesn't seem that way to me. As I said, one of the first steps in organizing is usually identifying your strong-no to strong-yes people, and building support among the yes side first. I don't have experience in organizing a workplace, but the information above is second-hand from conversations with people who have.
I have participated in "get out the vote" operations. In that case it's quite similar: you mostly want to avoid knocking on the door of likely-strong-no households, as you have so many likely-strong-yes doors to knock, and debating people on the doorstep is a waste of precious time when close to an election/primary -- so you can see the value in having a good data operation to know which houses are likely one way or the other, and spreading that knowledge to your canvassers.