It isnt about trusting him necessarily. Do you have a reason to not believe his mom or brothers? Does your distrust extend to them but not her? If so, why?

We were not there so we dont know what happened. It is possible to look for motives behind the need to lie. Money motivates a lot of people. I saw pictures of them all. Taken recently. They do not portray the kind of response from someone who experienced all of this. I also do not believe anyone who years later, when motives change, suddenly remember things that they can use the way it is being used. While repressed memories are real, I do not believe they work the way it is being portrayed here. This is just my, probably unpopular, opinion.

What in life has taught you that? High profile abuse allegations are frequently false. Consider the duke lacross case, for which the accuser recently admitted to fabricating it. That isn't to say that such allegations are never true, but believing such allegations when all other evidence contradicts them goes against the experience of any honest person.

He's gay, his mother is on his side, and BPD people make up lots of false accusations. There's good reason to suspend judgement.