I think Investing in Doge is a matter of personal choice and depends on individual risk tolerance. While Doge has seen significant growth in the past, it is important to consider the potential risk and volatility associated with the cryptocurrency market and it is very important to have a risk management plan in place and avoid investing more than what you can afford to lose.
Just like any other coins in the market, all of them have their own risks entailed including the volatility.
But Dogecoin, I can't blame if there are some people who are investing on it but they should know that it is really much more risky than any other leading altcoins in the market right now because Doge is just a meme coin with almost no utility. This particular altcoin wouldn't be trading at such low price if there is actually any utility in it at all. And that significant growth you're talking about is really not that significant because that was just temporary and probably, we already know who's behind it.