We might just have different standards, but that's past "social drinker" status to me. I don't know anyone in my social circle (online or offline) that have spent that much on a mobile game, and my social circle games a lot.
How many thousands does someone have to spend to move past "social drinker"?
Anyway though an essential mechanism of addictions is that they are dynamic. You can interview large groups of users of any drug (and also probably gambling) who will attest to its benefits in their lives. Even if they are currently correct, some of them will later become full blown addicts. It doesn't mean they were wrong at the time, just maybe overly confident about why it suits their lives.
A common AA dark joke is that "high-functioning isn't a type of alcoholism, it's a stage in it." A lot of normal users will end up addicts, a lot of mildly problem users will progress. AFAIK the same patterns show in gambling addiction which is imo one of the major problems with these super accessible entry points into it.
Assuming “thousands” means 5000, thats 416 per month. Taking an average cost of 10/drink (5 for beer, 15 for cocktail - this skews higher in major cities, lower out of major cities, lower still outside of cities), thats ~8 drinks a week.
If you spend thousands of dollars on a mobile game, that is dramatically outside the average (of my experiences).