There's quite a difference between merely not being positive, and doing active, serious harm.
A few years ago I ran for city councillor in the city I was living in at the time. I didn't win, but I learned a lot of things along the way.
While campaigning, I knocked on a lot of doors, and one of the questions I asked people was what changes would improve their lives. I was both fascinated and sickened by how many times the answer was "Do something to reduce the gambling."
I heard story after story of family strife caused by someone's gambling addiction, ranging from simple quarrelling to divorce and bankruptcy.
And our governments encourage this! No one is more addicted to gambling than our governments. There's a distinct shortage of truth in advertising when it comes to casinos and lottery ads.
You can't drink away half your retirement savings in a weekend, but you could gamble them away. At least on the financial side, the scale and speed of the harm that can be done is orders of magnitude greater than other so-called vices.
Several times as an affiliate marketer someone tried to recruit me to promote gambling sites. I might have acquired a lot of money (I can't bring myself to say "earned") if I had turned my affiliate energies from consumer shopping to casinos, but I couldn't go there.
It would have been blood money.