IMO, it's just a pump. I have never owned DOGE because to me it defies the basic principle of a good currency, that is, to have a limited supply. With DOGE, every new block you mine produces 10.000 DOGE coins forever. So, with this unlimited supply, I can't see how they are supposed to make their coin valuable long term. The current top 20 position therefore doesn't mean anything.
That's a very simple thinking. It's actually the opposite, healthy inflation makes a currency better, as it takes away incentive to hoard and encourages spending, so something currencies are made for. If DOGE was meant to be used (not to be a speculative, appreciating asset), the decision to leave it uncapped was reasonable.
There's another upside, having constant block reward means there will always be incentive for miners, while with Bitcoin - there's a big question mark on how will things pan out when block rewards are insignificant.
It might be a simple thinking. But look, with the current issuance rate, you have somewhere around 4 percent inflation (if I did the math correctly, that is - with slightly over 5 billion DOGE coins minted every year). USD has an average annual inflation of 3 percent. It is not hard to see how the
buying power of USD has deteriorated over the years.
That being said, it is clear that there are some upsides to having a low or moderate inflation, like you indicated, at least in the short to mid term. With bitcoin, the scarcity will enter the picture at some point, but it remains to be seen how the mining will work with insufficient block rewards from the coinbase transaction.