Dogecoin is classified as sh*tcoin because it almost has no utility but gambler/investor still loves to spend it, especially when it comes to gambling activities as their prices don't move that much. I agree that Elon Musk has changed dogecoin but there are so many people who have been successful enough to duplicate Elon's actions before dogecoin dipped again. But that's fine, as a gambler, we always find ways what specific coin is good for gambling purposes.
Using doge for gambling is one of its use, but still truly not having enough utility like bitcoin which even marchants are using, some countries like El Salvador and Central Africa Republic supports it, but it's low transaction fee is part of the reasons it is used for gambling. But as for volatility, I will disagree with that, the price of doge increased to $0.8 all-time-high and now at $0.06, before the bull run that occured in 2021, there was a time doge was at $0.002, the coin is also very volatile, even it is one of the most volatile coin during bull run.