it underlines sketchiness and adds a rough touch to pencil lines. paper is natural and "real" just like pencils. I like the texture I wonder whether things become "barbarian" simply by putting a horned helmet on them (...no link to your drawing X)
I think the texture is just fine given that you're uploading what appear to be pencil sketches, if it is a concern though then maybe try lowering the opacity of the texture? Great job on all of these, I love how creative your designs are!