this isn't hard moron. its been an acknowledged issue for years.
here's Calle talking about it last year.
https://www.whatbitcoindid.com/podcast/scaling-bitcoin-privacy
Discussion
I’m not listening to a two hour podcast from some fag wearing a gator who does not give a fuck about privacy at all.
State in three sentences the attack vector or stfu. If you use lightning correctly it is superb privacy.