We all are ware with this decentralised nature of bitcoin as we all know that there is no such proper authentic regulating body over bitcoin who could keep eye over all the bitcoin activities and specifically the illegal one and thus leading to illegal use like in selling drugs, explosives, money laundering etc and next thing bitcoin transactions does not involve any third party seizure so no third person has the right to see the transaction between the two and thus some social defaulters misuse it and use bitcoin for illegal purposes and this is the most probable reason why bitcoin is decentralised in many countries.
Bitcoin on-chain transactions are not anonymous. Anyone can use a block explorer to view address balance and incoming/outgoing payments. There is no such things as a block explorer for the Lightning Network since there are no blocks. Nodes which take part in the payment routing are the only ones who know about the ongoing transaction.
Next time read what you have wrote before posting. It was difficult to understand what you were trying to say and it wasn't related to your quote.