In my opinion, gambling is chance based and trading is skill based hence if you are getting into skill based gambling like sportsbetting or poker then you are almost trading there. Moreover, trading will simply come down to the level of gambling when you are not trading with the help of technical and fundamental analysis.
I agree with you, the only thing I would add is that the problem that is causing a surge in addictions are the new technologies. They have many good things and have changed the world mostly for the better, but they have their dark side.
Nowadays people are addicted to dopamine in many different ways like Facebook likes on Instagram, porn or addictions related to money like gambling or trading. So it is not surprising that traders call gambling helplines or women, who rarely watched porn when there was no internet, seek help for porn addiction.