Even if he has influence on the government, the government should not allow it when it comes to reserves; he can influence other areas of the government but not reserves.
Elon just wants to make another wave of pump for Doge, There are coins with better usage than Doge we've had enough of memes and if they allow it, I'm sure we will receive tons of new memes flooding the market and many investors will lose money with these new memes coming. With this, it stopped the meme momentum in the market.