I suspect Titane was also made not to engage but for us to observe which is quite a risky thing to do but the fantastical plot elements and sheer nuttiness of Titane are enough - it is an art house film in that it explores themes rather than follows a strong narrative. It is also therefore not strictly any genre and with such a lot going on it would be a thankless task to pin it down in this way. It's best viewed as a spectacle and almost a mirror on some of societies darker undersides! I loved it as it represented a very 21st century approach to writing which it admirably pulls off.