This is 733 million barrels. I doubt we will actually get to using this based on the rate of EV adoption and other technologies.
That's roughly 6 months worth of China's production. If it is immediately extractable I don't see why it wouldn't be as it definitely wouldn't lead to excess capacity or an oil glut. If China could I'm sure it would be happy to quintuple oil production as that's better than coal.
Though if you're basing it on the belief it will take many decades to extract all of it then I'm in agreement it won't all be used.