The purpose of the post was just to discuss the likelihood that lightning wallets, nodes, or LSPs will be targeted next. In arguing against Tornado Cash, the US Attorney's Office actually argued in favor of lightning providers not being money transmitters. So, the FBI advisory inaccurately, and probably intentionally, left the impression that lightning products could be targeted under a similar theory as Tornado Cash and Samourai. It seems that by their own admission they can't.

All your points make sense legally. We'll see how the courts rule. I'm just saying that IMO it's far less likely that LN products will be attacked next.