the fact that examples of any bad thing exists doesn't mean they are all bad or even that most of them are bad or even that many of them are bad - it just means some are bad and we should be vigilant
Take a look at the breadth of those stories again. Most--if not all of them--are from the past couple of years. All specifically involve "teen clubs"--specifically targeting "underage" kids. All of them ending up very adult-like dead.
I don't know how many clubs you have been in during your lifespan, but I have been in a ton (worked for radio stations and did all kinds of spinning, mixing, and promotion). What I have seen in my life and career does not make give benefit of the doubt in this situation. "Teen club" or not, there is not one I have been in where I couldn't get weed, ecstacy, coke, speed, or "other". There isn't one where I couldn't get liquor or at least a spiked drink (with/without a license). And the majority do not maintain "clean" records with the authorities. These places are not the CYO. Plus, we're talking about underage kids--most without any sort of parent fear or supervision--out in the 'hood until all hours of the night. Do you think the club is going to "supervise" these "utes" inside or outside their doors? Keep dreaming.
Adding fuel to this are unpredictable (but predictably stupid) teens who don't think things through, get drunk, get high, and cause a lot of "prankster" trouble through the neighborhood because they are invincible. Yeah, adults are stupid too...and they pay the consequences. Teens--unless it is an adult crime--are pretty untouchable and they know it. I did.
I grew up in the old Henry J's neighborhood and went there more than a few times when I got old enough. I had friends who puked in people's flowerpots and shouted at the moon after leaving the place and walking back towards the houses on Glendale. I don't blame those who live near the proposed club for being extremely concerned or saying "I don't want it here".