I am no mental health expert but this person likely had a serious addiction to Child porn to the degree he couldn't stop doing/engaging in it. This type of behavior is self destructive so much so that it ruined his life. Again, I am no expert but don't we see self destructive behavior in other areas from drugs, to sex addiction, to alcohol , etc.
In our culture Child porn is not acceptable at any level while other addictions are "tolerated" to a degree so a rehab back into society is possible. This isn't the case with Child Porn so Mr. Travis Bryant will likely not be practicing medicine in the USA.
When I was a resident decades ago a promising surgery resident transferred into Anesthesiology. This guy was highly regarded as a hard worker, intelligent and very gifted with his hands. But, he had a secret problem- he was addicted to Fentanyl. Over the next 6 months he began diverting Fentanyl for his own use in larger and larger amounts. Of course, this was eventually discovered and he was "forced" into a drug rehab program. He never came back to the Residency program and became a general contractor. I think things have changed for the better because this guy would likely be given a second chance today after his rehab. I doubt anyone will give Mr. Bryant a second chance in the field of medicine after his short stint in jail.