I don't believe I said the Niro HEV or PHEV would be discontinued, only the EV would be affected if the EV3 is offered in the same market.
As far as charging speed goes, the EV3 can charge from 10% to 80% in 30 minutes. I took a recent trip from Virginia to Michigan and for giggles, I tried planning the trip as if I had an EV. It would have required one stop to charge about the time we would have stopped for lunch anyway so it would have not been an issue. The hypothetical EV would have charged while we were eating lunch. Our HEV, on the hand, actually went the entire 500 miles on a single tank.