The above statement is true. It's also true that some of the work Blitzway does is quite good.
I think they are overrated because of those initial Ghostbusters proto photos. They got a lot of hype out of those and the Ecto 1. The figures are great but the production sculpts came up well short of those Kim prototypes. There was some egregious corner cutting on that Ecto-1 too. The electronics are a mess, the "sound feature" is a joke, the chrome bumper paint was downgraded, and most egregious of all was when the applied a vinyl decal to the back of the car when they realized they made a huge error with the color of the paint.
Comparing them to HT in any favorable manner is kinda funny at this point. Star Wars and Marvel vs. Where's Waldo and cancelling a Cutthroat Island figure due to lack of interest