Tetsuo: WHY is this film so damn effective??

Okay, I just finished watching Tetsuo: The Iron Man for the… I don't even know how many times. Each time I think I get it, but then I'm left with even MORE questions. This isn't just shock value, right? There's something deeply unsettling and visceral about the whole experience. The industrial noise soundtrack, the frenetic black-and-white photography, the sheer unrelenting weirdness... It all just coalesces into this kind of… metallic nightmare logic that just burrows under your skin. I'm particularly fixated on the businessman transforming. Specifically, that scene in the shower where he starts sprouting metal bits. WHAT is that sequence even saying? Is it some commentary on the dehumanizing effects of corporate life? Or is it purely about the loss of control, the body being invaded and overtaken by something alien and unstoppable? And the sexual undertones throughout the film... the drill penis, the metal insertion, the weird S&M vibe... Is that just for shock value? I'm not so sure. It feels…deliberate. I'm not saying I enjoyed watching someone vomit metal, but I can't deny the power of what Shinya Tsukamoto pulled off. It's not a comfortable watch, by any means. But it's definitely a film that stays with you, festering in your mind like a rusty nail in a wound. Anyone else found themselves completely mesmerized (and slightly disturbed) by Tetsuo? What's the underlying MEANING? Am I giving it too much credit, or is there more to this metallic madness than meets the eye? Curious to hear your thoughts (and hopefully I'm not the only one slightly traumatized). Also, anyone know much about Shinya Tsukamoto? I feel like I need to dive deeper into his filmography now...