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This is the best way to take advantage of your power to grow nation economic, which is what Trump and his family is doing to boost the economic by introduced a new project. The price of the coin has dump doesn't mean it will remain down forever, because the team behind the project will not allow the project to die like other new projects that died without a single positive results from the projects.
I think if what Donald Trump is doing is really aimed at improving the country's economy as you said, it works because as we can see Trump managed to make hundreds of millions of dollars just from his meme coin, even though we know the $TRUMP token is a meme coin that tends to have no utility
(garbage token) just utilizing the hype that is happening, yes with his big name, everyone will rush to buy because they think they can make a profit or as a form of support for Donald Trump himself.
I guess some investors care the amount should be invest in new altcoins about the suddenly dump of altcoins, because they don't invest big money on altcoins like the way they invest in BTC because they know that there is hope of earning a big profits from BTC when the price hit higher in the nearest future.
However, investors will prefer Bitcoin (BTC) as the main asset in their portfolio, in addition to being more stable, it is also the best option when the market is volatile like what is happening now.