I disagree, given how standards for getting a driver's license are different between countries and getting more and more tighter.
In the US, unless things are different from TV, you can get trained by someone else with a license in a regular car and do an exam.
Over here, you need a driving instructor in an adapted car (dual controls), and depending on how well you pick it up, spend anywhere between 15 and 50 (or sometimes more) hours practicing driving and traffic rules. There's a written / theoretical exam you have to study for (traffic rules), then a practical exam with an examiner.
In my case, it cost me about €2500 in lessons to get my driver's license. Then I spent another €1500 or so on top of that to get my motorcycle driver's license, where there's even more emphasis on personal safety and safe driving.
With that in mind, I'm confident in my claim that Dutch drivers are better than American ones.