I've been curious what this entire conversation revolved around this week, so I watched this week's Gotham tonight. The Viper/Venom storyline reminded me the mirakuru from Arrow last season. I don't remember the same complaints being levied against that show for essentially the same thing.
In Batman Begins, the Scarecrow's plot is to use a drug to make everyone see things that aren't there and effectively wipe out the city. The same thing essentially happened in Batman (1989) when the drug was put into makeup. And lest we forget Catwoman where makeup was used as the bad guy plot. And The Dark Knight Rises and Bane (not to mention Batman & Robin). So yeah...I'm more more than okay with Viper/Venom/whatever you wanna call it.
I'm still not loving the portrayal of Alfred here, though he's not longer the obnoxious jerk I wanted to strangle from the pilot. The moment when Bruce gives him an "order" made me laugh. It was funny on one hand but also showed their evolving relationship, along with what I perceive to be a change in the characters from the writers. Most of the the things that grate on my about the show wee kept in the background this week, including Barbara and Montoya and the eternal Harvey/Jim antagonism.
One last thing: I'm always impressed with the movement of the actress who plays Selena. She's got the whole cat thing down to a science and slid right off of the car in the opening scene like nobody's business.