He hangs out with "Rob", who gives him easy access to drugs, which is the last thing he needs.
Lenny is now a cookie-cutter drug addict, and not just phenibut with the occasional GHB. He became everything he claimed to despise...
He was probably always into drugs but this is a whole new level. Lenny is lost and needs a full-time job and I wouldn't be surprised if he dies next year with this on top of his pre-existing health issues unfortunately.