I don't honestly know if lootboxes are gambling or not, but it's time to be honest with the mechanisms behind them, and follow Chinese and Japanese regulations: be transparent and open about the probabilities behind them. Yes, even if it includes pity counters, etc.
Apple has started mandating this: https://www.polygon.com/2017/12/21/16805392/loot-box-odds-ru...
But Steam, Google Play, PlayStation, XBox, and smaller platforms all need to follow suite, very quickly. Or they'll face even harsher legislations around the world.