i think VFC get a bad reputation for their internals and being bad to work on. I think this is (as above) largely due to negative airsoft, but you have to remember for every one that’s on his bench there’s probably hundreds out there that are just fine. Also worth noting, I’d imagine a lot of the stuff that ends up on his bench is because someone else has tried to do the work and made a mess of it. He has clearly had this on several occasions, I’d imagine few people own up to this being the case.
Whilst I respect his opinion, he generally doesn’t like higher priced replicas like these and his opinions on things regularly change from one extreme to the other.