Of course, to some the toy alien was modeled after the REAL ones housed at Area 51...
On another forum discussing this guy I've heard a couple of lame attempts at dismissing the photo of the model alien.
One is exactly what you say, that some govt. agency had some toy company that made models make up alien toys that looked like the real aliens that are in Area 51 so if photos were ever leaked, they could then leak photos of the toy as a way of discrediting any whistleblowers.
Another is that the photo of the model alien was given to Boyd Bushman in order to discredit him.
Of course, no evidence for either of these scenarios is forthcoming, but I've noticed that some people are so far down the rabbit hole that they simply can't admit to being wrong and will invent ad hoc excuses for inconvenient facts. They've built up a wall surrounding their beliefs that simply can't be penetrated by reason or facts. Anything that shows them to be wrong is simply handwaved away as part of an attempt by the-powers-that-be to coverup the conspiracy.
This guy Boyd Bushman's story is doing the round on various websites and he's taken seriously by some people because he held the position "senior scientist" at Lockheed-Martin. It's interesting to see that kind of argument from authority coming from the kind of people who are usually the first to reject arguments from authority (arguments from authority can be valid IMO if they're coming from someone who is talking about their field of expertise and subject matter they actually understand and work on)
As it is, the usual poor defences are being made for him that are made for other supposed whistleblowers. "He has nothing to gain from lying!" "Why would he lie?" "He risked himself and his loved ones by coming forward with the truth!" "He's not making any money from revealing this stuff!"
I don't care why someone would lie about working on alien technology or whether or not that they gain financially from it. What I want is verifiable facts that back up their case. Without that, it's just a lot of lip flapping.