if the doge became expensive, it would be a very positive thing. but keep in mind that this increase has the impact of elon musk saying that doge to the moon, and most likely he also bought and made the price of doge pump up.
Elton Musk may be bought some dogecoin but not yet bought many. If Musk buys a lot (Say 1 billion), the prices should be around 1 dollar level now. Maybe he will buy more in the future if the price keeps in the low range to aid it's up. So I suggest buying some dogecoin and hold it for the long term.