Michaux takes a long time to get to the point, even at double speed. None of what I have heard in the first 20 minutes is new to anyone who followed the Peak Oil debate back in the 2005-2009 period. His estimate of required battery capacity for short-distance and light vehicles, around 62 TWh, matches a quick back-of-the envelope calculation, so that's good.
The description for the video is unpromising, blurring the distinction between reserves (known, characterized, owned) and resources (varying degrees of knowness, characterization, unowned), and implying we face a binary situation: plenty of resources, and then nothing. The world is not like that.
There is always a spectrum of possibilities. We have an extremely abundant adequate substitute for copper for electrical uses: aluminum. The bulk of electrical distribution systems is steel-cored aluminum wire.
Is copper better? Yes. Is it so much better than aluminum that the latter is unusable? No.
Aluminum's lower electrical and thermal conductivities will require design changes (higher voltage, lower current), and overall efficiency won't be as good as with copper. Very sad. But aluminum is still perfectly usable for EV motors.
And there are ways to eke out the copper we have, such as copper-clad aluminum wire (CCAW), which is already extensively used in loudspeakers. Some high currents flow in subwoofer voice coils.
As for poor people being left behind, resource prices are not the cause. Very few mineral resources are used in providing education and healthcare, and none at all in depressing wages or preventing houses from being built.
(And the high-priced vehicles being sold now pay for the R&D to improve the new technologies. The first portable computers and cell phones were ridiculously expensive toys for the rich, as well.)