The worse things are in the US, the worse it will be for the whole world in General, and BTC in particular
Your reasoning is quite correct
But your premises are quite shaky. That is to say, crypto won't be a lot better than the world around it, but what would make the world a much worse place than it is now? You essentially say that Biden is going to destroy the American economy (or substantially impair). But is this really so?
When you think that BTC is a fully decentralized currency, you forget the simplest truth - you can't buy it without using dollars. And when your entry point suffers, so does everything that comes after it
It is not about dollars
You can buy Bitcoin with, say, rubles. Kidding aside, cryptocurrencies are not possible without people supporting them and using them. After all, who would care about dollars, if you could pay with crypto directly?