The point of the post is a logical fallacy. Doing one action doesn't mean your not capable of doing the other.

How many times have we all seen real murder crime documentaries that shown people doing double life duties? A good example is a person doing charity work or giving food to the homeless for humanitarian reasons. Then, in the night they become a robber or killer?
How about those teachers that teach kids in classrooms only to assault them elsewhere?

As long as the public doesn't have undeniable proof, the speculation will continue.