We do not really have a way to know and personally I would prefer that it was not real, since in my case it would really pain me to lose so much money over such a short span of time, however we have seen people like Drake losing way more money than that before, with the difference he is incredibly wealthy, but this makes me think that even if the story of the OP was not true, there are probably many gamblers out there which have experimented those kind of losses before.
If one is financially stable, then I see no need to gamble because it's more regarded as stress to me. Severe losses are recorded daily in the system, just stick to one strategy and ensure to be able to maintain consistency, then one will see results positive results, that's how to win a game. But rushing from one strategy to another and copying other gambler's game won't help, that will only trigger more losses and they can be unbearable. We can't compare Drake heavy loss in gambling to ours because he's a celebrity and financially balance to stake with any amount he wishes.
The losses of one gambler and another gambler will be different and we cannot compare the amount of loss because it will depend on the money used for gambling. Those who use big money to gamble can experience big losses and will definitely be bigger than ordinary gamblers. We don't need to experience losses that are too big, especially if we only use small amounts of money to bet and we always try to limit our gambling. We also don't need to chase to recover losses like other gamblers do because they may still have more money than us so they still want to try to recover their losses. And yes, there are definitely more gamblers who have experienced big losses and there are definitely some of them who do or don't regret it because they have lost so much money.