Yes, I do know that people who trade or deposit/withdraw over 2 bitcoins should be checked and the money laundering is a big issue in many countries and allowing them to do whatever they want without any personal information would turn out to be giving the drug dealers a way to launder their money via crypto which would be horrible for us but in the end as long as its just 0.1 or even smaller they are not money launderers they are just regular people, nothing bad could happen from a guy who just wants to trade 0.1 or similar numbers. So, ID should be asked only to people with over 2+ in their account and not under.