That's something you read on the internet and that people keep repeating without having any understanding of. In reality it's quite far from the truth, because most fraudsters don't just steal your money and keep it on their accounts. They use fictional shell companies, they move the money around, they steal identities etc... The money is just not there to be returned.
Yes, you can go to the courts, but they are not going to magically give you some new money if there is none to be taken back, or none to be found. This is a very common occurrence.
Also courts only even help when there are very large sums involved. In all other cases it still costs more to go to the court than there is money to be saved, so it's a oot point.
Oh, and above all, the courts work exactly the same way with crypto, haven't you noticed this? Stealing is illegal and can be dealt with in courts, whether it's USD or BTC, it doesn't matter to the court. So what is the point of mentioning this?? If your fraudster still has their BTC, the court will get them back. Government has also seized a lot of BTC from criminals, so again, it's working exactly as USD in this regard.