ANOTHER THIEF!!!!

Clearing textures and making other modifications (as seen on other products) any child can do...
- That's the "new" way of "modelling". So you can't call those "3D Artists" lazy really (sarcasm) !
The problem is that you don't have enough proof to get them deleted even though it's obvious where most of those "creations" come from.
Some of those get some of their models removed, a few banned while the next dozen floods this place or returns with new "creations"...

The level of piracy had became extremely obvious in the last few years.
I suspect, there will be some big changes in the market, because of that.

Just another one :) same business model. Ripped game models cleared textures and converted to stl
https://www.cgtrader.com/3d-models?author=dimonjakor

This is getting ridiculous :)

Stripping of textures from stolen models is a new trend. Here's couple more thieves to your collection:

https://www.cgtrader.com/3d-models?author=No-Texture
https://www.cgtrader.com/3d-models?author=ameximenos

I don't want to be negative but I don't like where this is going!

And it's not only thievery, but also scam and fraud. I'm in rapid prototyping industry more than 20 years and I can say rock-solid-sure that 99.9% of all those ripped models can't be printed without very big amount of job that may take more time than modeling from scratch considering all criteria for 3d printing or CNC machining.
It's very bad that CGT allows (in my opinion not only allows but stimulates) horde of scammers. I'm agree with @trimitek about transformations of market and lot more agree with @Mineral3D that those changes are going in catastrophic negative direction.
And partially with humor: in 5-10 years we will be faced with the flood of AI-generated models and that flood will wash away from the market all of us: designers and thieves both.

This is stolen 3d model (that is on sale here on cgt as 3d printable model) from mobile game csr racing 2. The extensively used custom normals to keep polycount low so it won't be resource heavy. This particular part only have 1 "strip" of polygons. Reseting normals on that part spoils shading completly. In Fact the whole model is done using hard edges/custom normals technique, there are no support loops for anything and that's before non-manifold geometry, intersecting faces and as luxxeon said thicknes problems comes in. From certain distance it looks like a high poly model and that's enough to fool someone to buy it, and of course it's still on sale, don't miss your chance to buy high quality 3d printable model of Bugatti Chiron.

https://ibb.co/XLD0w9t

Funny enough, I downloaded a robot model from CGT for free a couple of years ago, and then I saw the same model for 200 bucks or so. It seems like someone had downloaded the pricy one and then uploaded the same model for free. I don't know why people would do that? To ruin someone else's business?

I haven't. But now that you mentioned, I think I shall inform both the site and the owner. Because, this is an awful act.

That also made me suspicious, maybe the main model was uploaded for free, and them someone put it there again for a price. Yeah, I'll check it out.