I heard something about such mixing activities. It is possible not everywhere but I am sure large scale money laundering shops do that just not with 100 dollar payments but with mllions. Whole art market is essentially fiat mixer. 

notgeld

You can't develop on the existing financial structure without their permission, so that's death on square one.

But, it would definitely increase LN adoption ⚡️

bitcoin

Dutch WEF finance minister wants to surveil transactions over 100 Euros

I think at some point we should allow them to surveil sub 1 Euro transactions and just flood them on the other side. Develop "mixers" using fake accounts etc. 