The person the created dogecoin did it in a few hours without really considering anything really technical about the blockchain, it was created initially as a joke and it has now grown to become one of the top coins in the market based on pure speculation and no fundamental characteristics.
 This is how easy it is to create cryptocurrencies and scammers have recognized this and are utilizing this to the fullest. This is why the blockchain market is flooded with cryptocurrencies that have little to no value, while other cryptos are just pure scam