Probably the fact that he's not Dutch, doesn't live in the Netherlands, and while yes you are 100% correct that the law is on his side and should be able to just return it for a full refund, it might be a task so daunting for someone who is from a different country that he just doesn't want to attempt it.\

EDIT: oh wait, he did do that actually:

>> On January 5, 2025 I called Tesla Netherlands Sales Department to request the return of the vehicle and a refund of my money.

Sounds like he should contact a dutch lawyer to send them an official letter informing that he's returning the goods as unfit to use.