Gambling is a destructive addition that the vast majority of participants cannot manage well. It harms not only them, but their children and their spouses. How many a kid's college fund has gone up in smoke? A lot of harm is done to very innocent people in pursuit of a ten second rush. (Much like all other addictions.)
I also very respectfully disagree that inventing a name for something is not productive - it's incredible effective, in fact. That's why political campaigns often favour duelling names over hot button issues: it's easier to win broad based support from soccer moms and football dads for 'marriage equality', whereas 'homosexual marriage' may be a harder sell. See also 'medicare for all' versus 'socialized medicine', 'pro-choice' v 'pro-life' etc.