Not for me. I don't smoke anything, never tried, never considered and don't ever intend to consider it, but still agree 100% with brian/seth's point of view. His explanation before peter cut the cheese was entirely true, and while my personal experience is that pot makes people lazy and absent minded, I cannot agree that it causes enough harm to be criminalized even mildly, let alone a federal offense.
Brian's "comeuppance" was just depressingly realistic.
Why? It's a completely natural, human sentiment to view animals as more innocent, especially a small, vulnerable pet.
I still found it darkly hilarious, but I completely understand why someone would be just plain disturbed.
I kinda hope a future episode has Quagmire get back at Peter for it. The show has plenty of callbacks along those lines.