How are you so sure that there's nil lawyers would have no idea about this kind of case? Is your superiority complex that bad that you think that other people that don't have an inkling of knowledge or their interests are outside of bitcoin don't have the idea what they can do with this? They don't need to know it, the clients and the defendants just need to tell the truth and everything that the court needs to know so they can make a case about it. Clearly you and I aren't a student that's involve with law but I don't just blurt conjecture with confidence. Not everything wrong with bitcoin is money laundering, it's been proven already that bitcoin's a bad cryptocurrency to use for that kind of activity.
Seriously, watch TikTok trial courte, watch every minute of it and you'll understand why I am so confident when I say that.
Or just watch it:
https://www.youtube.com/watch?v=q0QbtLh976IAre you still sure that they'll know how bitcoin, bitcoin mining and blockchain network works in depth? They asked such a dumb questions to TikTok CEO, especially when it was truly their wish to ban TikTok and stop its operations.
Depends on your morality (or lack thereof) I guess. To me it's pretty clear. If you know that someone paid you too much in error, and it's practical and possible to refund them - you should.
If you sold a car to your friend and they accidentally wired you $20k instead of $10k, you wouldn't use "other people make mistakes and lose money permanently" as an excuse, you would send it back (I hope).
How much is too much? How are we going to set the limit where after certain satoshis, it's too much? And on individual level, probably $5 more fee is too much for me than half a million dollar for PayPal.
Car's price is fixed price while in bitcoin world, there is no fixed fee to make a transaction, that's why your argument is weak.