I've seen these models on sketchfab that I find good enough for a mobile game, but if you look at them in wireframe mode it looks like they are made of a succession of cubes (or very close shapes).
I'm far from an expert at modeling, but isn't it a very bad practice?
In blender, what's the difference between creating multiple objects and a single object composed of multiple meshes?
How will it impact rigging / animation?
If I would import them into a game engine (unity for example), can it make a difference (in performance/usability/shading) ?
In short, are these models bad?
Thanks for your help.