You are correct here that based on historical data altcoins do not always correlate to bitcoin, in fact, they go down sometimes when bitcoin goes up. Elements for example the fundamental of every altcoin has a key part to do in the price of that specific altcoin. For instance, Dogecoin has not made such a rise because there is no stimulus to pull it up. However, when the altcoin season comes into play, most of them may have a high chance of recording high growth rates. During this period there are likelihood of increase in prices of altcoins as therefore requires patience and monitoring of market trends.
Of course, not every time altcoins follows Bitcoin. Sometimes altcoins can increase faster than Bitcoin. Altcoins also can increase higher because of its fundamental aspect. Dogecoin seems a big different, it is a meme coin. The meme coin relies on the hype, some people may spread good news about this coin. But we don't really know the truth of the news/issues. Well, it will be easier to increase if we are going to the altcoins season.
Although there are those who do not follow the movement of bitcoin, almost all say the same thing that altcoins are certain to follow bitcoin wherever it goes, so words like this are common to say by anyone.
Because they are indeed very relatively small altcoins that do not follow bitcoin and usually not continuously and sometimes only, and finally, always in line with bitcoin.
doge, even though it is a meme coin, it is better than other meme coins and, indeed, we know that meme coins cannot be separated from dependence on hype and that is what can make meme coins move up, not from the efforts made.