For me it was season 3 that I found the worst, too much slapstick and I disliked how they turned Hopper into a walking bastion of juvenile insecure comic relief. Season 4 on the other hand rocked again, much darker and a better balance between seriousness and humour.
If it’s written in the law, it’s lawful. You can of course (and should!) debate about the morality of the diverse forms of lawful interception, but a blanket statement like ‘“lawful interception” is a fallacy’, is a fallacy in of itself.