Dogecoin has only one advantage: Elon Musk tweeting. If Elon Musk loses interest in Dogecoin so will everyone else. Cardano on the other hand has a whole team dedicated to marketing Cardano and improving it.
I am not a huge fan of Cardano but it is way better than dogecoin because it has some use cases, unlike dogecoin that does nothing but rides on the Elon Musk hype even as you mentioned.
I was among those who loved dogecoin when I first got to know about it, because it was at that time the only coin we could send and receive without having to wait too long and without paying too much fees. And we could lose 50000 dogecoins and yet feel nothing in gambling because they were really cheap those days.
Now with dogecoin sitting well above TRX, I would rather prefer to transact using Tron above dogecoin because it is faster, cheaper and more convenient.