People are seeing doge coin as a coin that can be used to create the microtransaction and it needs a very small fees and that's why people are seeing as the advantage and utility for the doge coin but these days the fees will be following the price of coins too. I can't say the tx fees of doge is cheap again.
The value come from this thing combined with the demand to use it as a tipping or various things and people are hyping it just like Elon.