1) the logistical cap on SPR draws is ~0.5M BPD, which is essentially in line with the 3-4MM bbls per week that are ALREADY being drawn from the US SPR. I.e. the SPR daily release can’t get notably larger than the current outflow
2) even if a 1MM BPD release was feasible, a release of this amount would draw the already partially drained SPR down to ~300MM bbls, leaving almost no reserve, considering the US has to store 315mm bbls to comply with the IEA’s guidelines that specify member countries hold 90 days of net import cover in reserves.
3) eventually, SPR has to be restocked (almost, certainly at the higher prices).