You can believe what you like. I was hired for a position at a VA I'd never visited by people I'd never met or spoken with; one or two of them knew a few of my training supervisors, but that's the extent of the familiarity. When I was later involved in hiring at that same VA, I think only one of the various positions that was posted over the years had someone already in mind for it, and that one was only ever posted locally/internally. I also personally know other psychologists brought on at that and other VAs who went into positions that weren't specifically set aside for them. And beyond all that, I have nothing to gain from lying about the circumstances of my hiring.
VA is a small world, so there's a decent likelihood you may have met, heard of, or trained at a similar place as the folks involved in your interviewing/hiring (which, as I said, wasn't the case for me). That's a far cry from the position being posted with you specifically in mind. As I said earlier, maybe what you're speaking to is the case at one or more Hawaii VA locations. But as the saying goes, if you know one VA, you know one VA.
Now, what I wouldn't be surprised to hear is that many/most postings on USAJobs are filled eventually by internal hires, such as people from that same or (usually) other VAs. Again, that's different than the posting being made with a specific person in mind. It sounds like you've had a frustrating go of it, which is a bummer. Hopefully if the problem is on the VA side at this specific site, they get it worked out.