Well, I am DEFINATELY not trying to stick up for Trumpy...maybe I should make the argument this way:
Say I saw your build on the internet and decided to not only make my own version, with minor changes, but to show it to a mjor manufacturer like Trumpeter. Assume they took me up on it and decided to run with my build based on anothers work, (and who may not have been known by me when I saw the pictures as "unmarked" pics of models float around all over). In the end Trumpy took the design of a legit builder, me, but not a copy of your work. If I do not mention my inspiration, your work, I am showing at least a lack of "professional" courtesy if nothing else.
I guess the biggest thing that sticks in my craw is that your design is too good...it all uses real WWII german parts, maybe in slightly different scales. The Turret says redesigned Tiger II, not totally new turret design. The armament and turret hardware are all based on late war parts. The hull is a E-100. The most unique pieces you added are not on their kit.
I also hate how cutthroat chinese capitalism can be, it sucks the joy out of everything...I guess we American's taught them to well?
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I would rather be singing the praises of how a modeller was able to inspire a company to build a sci-fi paper panzer than dealing with this hair-splitting. Sigh.
I am inspired that you are willing to stand up for yourself, so my hat is off to you there...