Nothing about that sounds substantially addiction producing. Just flashy and designed, like anything else in a video game. Is there a proper study on that being a substantial addiction causing effect compared to card games and such? I've seen people lose ridiculous amounts on completely boring gambling games like SatoshiDice where all they do is push send. The fact that you get the random outcome seems much more likely to be the primary culprit than any flash effects around it.

I get the impression people saying that are just making excuses because they don't like loot boxes as a business model for games. Would you be accepting of it if they replaced it in the game with a simple click and get the result system?