Even through Mixers are the current primary target ,
wonder how much longer before LN hubs that do not comply with KYC/AML laws could also be considered as not transparent and become illegal.

Something to think about if you are running a LN hub and can't afford to follow KYC/AML reporting regulations.
LN is by default a money transmitter service , and could be also placed in the category of money laundering services as it anonymises transactions . This has been mentioned many times in the past in here and those presenting the problem were consider loonies . A whole community is waiting for the overenginnered "holy graal" which will be proven a waste of 8 years and a serious delay in bitcoin adoption . Probably we will see devs working on LN facing charges like the tornado cash dev at some point ? Authorities work slow but they will act at some point .