We can talk about church discipline till the cows come home...

Baxter was very aware that many men in ministry in his day (!) were keen to talk about discipling their congregations, less keen to do it:

The Reformed Pastor p. 164-166.

"There are, in fact, but few men who do not seem zealous in disputing for one side or other; some for Prelatical way, some for the Presbyterian, and some for the congregational. And yet when we come to the practice of it, for aught I see, we are quite agreed: most of us are for no way... Discipline is not a needless thing to the Church: if you will not make a difference between the precious and the vile, by discipline, people will do it by separation."

The last point may have been true in Baxter's day, but in the average congregation today I doubt whether a sinner still in church communion would produce separation - maybe just a good old back stabbing.