I think the most misunderstood thing about chord tracks is that they are only useful for writing your chord progression (a crutch for music theory challenged users), rather than the more powerful way they can be used to alter the chord progression for all of your tracks in the arrangement that are following the feature.
It is not simply a tool for writing your song's first track, while giving you suggestions for a pleasing chord progression in your song. I'm sure it could be helpful in that way if you need the music theory assist, but it can be much more than that.
For example, say you wrote your song manually, such as a melody track using your own chord progression. Then you got inspired and put down a dozen more tracks in your song that harmonize with that initial progression.
But wait, what if you then decided to alter one chord in the melody that didn't work harmonically with your other 12 tracks?
You could edit all the other tracks manually. Or, if all of those tracks were following a chord track, then you could simply make the chord change to the chord track and the change would instantly ripple through all of your tracks!
Which workflow would you prefer???