>is picrel based despite being a lumpie?
No he's not. He's a lumpenbourg piece of shit whose very existence coarsens the lives of everyone around him & in the community at large.
>is everyone on the show a lumpie?
Pretty much. The characters who aren't explicitly lumpen (ex. Carmella, the other mobsters' wives, AJ & Meadow, Janice, Livia) could be considered lumpen-by-proxy. Melfi is pretty much the only morally upstanding character on the show and even that's debatable.