It's the most used and recognised model available. And usually pretty accurate.
Where is it the most used model?
In serious settings, such as jails, courts, academic testing, forensic settings, hospitals, private practice, it's rarely used or recognized. In some, it still may be used.
The MBT has its cult following, but its rarely used in any serious setting.
How do you know it's accurate? How can it be accurate if it has poor reliability and validity? I'd love for you to explain that to me. lol.