Is BlenderGPT really a registered trademark?
Surely it infringes on Blender's (unregistered) trademark, but maybe the registration process only reviews exisiting registered marks, and it'd be up to the Blender Foundation to challenge the use of BlenderGPT. On the other hand, the USPTO trademark search didn't turn up any relevant results for BlenderGPT even though the terms of service on the site seem to indicate a US based company.