And WTI rallied 8 percent last week because the EIA and some private research experts revised their 2018 world liquid fuels consumption forecast upwards. So some really big swinging dicks in Houston tend to disagree with your premise.
When judging commodity valuation - you just can't look at supply as the be all end all magical unicorn. There is the demand side of the valuation equation. In the commodity futures markets, demand determines how much oil to pump, how many acres to plant, how many megawatts to generate, how much gold or silver to mine, how much kerosene to crack from a barrel, how many Southern Pines to harvest for lumber... and on and on.