You see, it is very cheap with the price of 1 doge at around 55 satoshi at the moment, which is less than 1 cent. And most casinos allow the minimum bet amount of 1 doge (or even less than that). In this way, Dogecoin allows the longest sequences of bets for martingale, and that likely explains why it is used widely for gambling (apart from its transactions also being cheap and fast)
Actually, some dice sites allow minimum was made with much less than that. You can bet with as little as 0.00000001 DOGE on some of them. But although you can afford many consecutive losses betting with DOGE on such sites and thus be winning constantly, the question is is the game worth the candle? You can win 0.00000002 DOGE per second on average with automated betting. It's 0.000072 DOGE per hour or 0.00072 DOGE per 10 hours. I bet you pay for the electricity your computer is using thousands times more than that even in the countries where it's super cheap
Was it dooglus (or whatever his name is) who reported that he saw it only a couple of times with someone hitting a streak of 28 consecutive losses at 2x during the time he was running a casino? In this way, you don't need to set your initial bet amount at absolute minimum or you could just set lower (higher) odds so that the losing streaks would be longer while potential profits higher
But I agree, it is still either a waste of time or waste of money (you choose which)