I don't think the characters' shadows looking off/low-quality really means anything. That's likely just a limitation of the rendering engine (which I think is a real-time engine, i.e. it sacrifices quality/realism for performance). Imo the only time shadows would be meaningful is when there's like 2 characters on screen but there's a shadow of an extra character present, which I think has happened a few times
Also I've been thinking: given the content of LiL, doesn't Selebus being an insufferable person kinda check out? Not saying that it's acceptable, but rather that it's hardly surprising that spending thousands of hours per year writing and thinking about such twisted shit (for almost 4 years straight now) would make you irritable, impatient, egotistical, etc.