Why is it NOW or NEVER to buy a 2019 Ford Fiesta ST?

The 2019 Ford Fiesta ST is going to be the final year that this model and trim level are sold in the USA. Under the hood is a 1.6L turbocharged inline-4 producing 201 HP mated to a slick shifting 6 speed manual gearbox. From it's lightweight chassis and fun driving experience, is Ford making a mistake?