Forbes article from today notes that Dave Lee, a "YouTuber" and Tesla investor asked Musk “What makes you choose doge over them?”
Musk replied
“[Dogecoin] has dogs and memes, whereas the others do not”
Musk issued a call to developers to submit ideas for dogecoin upgrades and improvements via Reddit and GitHub, also replying to a news story about ethereum upgrades, saying ethereum’s co-founder Vitalik Buterin “fears the [doge].”
“Someone suggested changing dogecoin fees based on phases of the moon, which is pretty awesome,” Musk added, telling one other Twitter user dogecoin developers “told [him] they would appreciate help.”
And up goes Dogecoin again