Regen braking is a way of slowing down like drum brakes. It's not inherently any less smooth.

By context, he obviously means automatically applied regen breaking upon releasing the accelerator (so-called 1-pedal driving). While its possible to maintain a smooth speed with this feature, some drivers are using it improperly when e.g. approaching slowing traffic by just releasing the pedal and allowing the car to basically brake aggressively rather than feathering it to allow the car to coast smoothly to a stop.

It's likely they mean disabling one pedal driving, so regenerative braking will no longer trigger from letting off the accelerator.

Uber guys take a bath on EVs, they try to squeeze more range.

That does not really make sense. The most efficient way to drive for range is slow and smooth.

Well, uber drivers spend like $0.60/mile, and make well under a dollar/mile, so the whole business doesn’t make much sense.