This point might actually carry some weight if it weren't for the downright heavy-handed way that the APA operates. If you ever read about how homosexuality was taken off of the list of treatable mental disorders, you'll see that it was not that psychologists were discovering that, but instead that homosexuals themselves got into positions of enough authority to push through the changes in policy.
By saying that "just about every reputable psychologist" has a certain point of view about homosexuality turns out to be a circular argument. If they disagree with the official APA position, then they are not reputable -- even if their research is impeccable.
Face it, there are many things that you cannot say in this country and many things that you cannot even research without a large part of society coming down with their full force on you.
The A.P.A. Normalization of Homosexuality, and the Research Study of Irving Bieber
"...Dr. Bieber was one of the key participants in the historical debate which culminated in the 1973 decision to remove homosexuality from the psychiatric manual.
His paper describes psychiatry's attempt to adopt a new "adaptational" perspective of normality. During this time, the profession was beginning to sever itself from established clinical theory--particularly psychoanalytic theories of unconscious motivation--claiming that if we do not readily see "distress, disability and disadvantage" in a particular psychological condition, then the condition is not disordered..."
Dr. Bieber describes the deletion of homosexuality from the American Psychiatric Association's diagnostic and statistical manual as "the climax of a sociopolitical struggle involving what were deemed to be the rights of homosexuals."
"It is my aim here," he wrote, "to separate out the psychiatric and conceptual issues from the sociopolitical issues; to document my own theoretical and clinical position; and to describe the events that I participated in and observed--all of which I trust will bring into focus the elements that went into the American Psychiatric Association's decision."...
A task force was set up to study homosexuality, but the members chosen included not a single psychiatrist who held the view that homosexuality was not a normal adaptation. There followed riots at scientific meetings by gay activists who increased the pressure on the Psychiatric Association.
Will preventive therapy for homosexuality be prohibited, Dr. Bieber wondered, when homosexuality is normalized?...
Summary
The factors that determined the decision of the APA to delete homosexuality from DSM-II were summarized as follows:
1. Gay activists had a profound influence on psychiatric thinking.
2. A sincere belief was held by liberal-minded and compassionate psychiatrists that listing homosexuality as a psychiatric disorder supported and reinforced prejudice against homosexuals. Removal of the term from the diagnostic manual was viewed as a humane, progressive act.
3. There was an acceptance of new criteria to define psychiatric conditions. Only those disorders that caused a patient to suffer or that resulted in adjustment problems were thought to be appropriate for inclusion in the Diagnostic and Statistical Manual.