shmoel,
Can you please let us know from where you take that information?
As far as I know, most competent therapists will try to make things work. They get paid to make the shalom bayis work, success is if the couple can be helped and things work out.
You must agree that there are a lot of people that really have issues which make it very hard for someone to live with them.
The therapist will try to communicate with the troubled spouse. If however the troubled spouse refuses to open up to to be helped. The therapist might rightly so assist the couple to divorce, as staying together will result in a living hell for the couple.
Of course you have to be able to rule in or out a divorce, but I dont think that it is right to make such a blatant blanket statement.