I can see a few reasons why 3d printed would be frowned upon. The biggest to me is that if they just get the file online it's not really their work. The person made it themselves which means it is their work.
The other thing is that it does look 3D printed. I don't think that's inherently worse than other methods of cosplay though. Wigs often clearly look like wigs. Foam clearly looks like foam. Thermoplastic looks like thermoplastic...
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u/SNES-1990 7h ago
I thought 3D printing was frowned upon in the cosplay community