To start from this old article
https://www.coindesk.com/dogecoin-is-the-joke-that-wouldnt-die-finally-dying/, there you can find answer on headline question its ` And its three-person volunteer development team continues to keep tabs on the project`. If you take a look at the whole article you will find some good informations like this one `a group of people that together trade anywhere between $50,000 and more than $200,000 per day, data shows` and informations from coinmarketcap shows Volume (24h) $6,479,660 USD, is that some rise!
Started as a joke, nothing has changed but this comment explained something, it really has some patterns, you can earn from trading with doge, not much but its possible.
The original dev left the project long ago and touted it as a joke on MSM. From a technological perspective it's quite efficient though. And from a trading point of view it's been following predictable patterns for years.