But the amount of billionaires the US is printing is already problematic and that’s a capitalist country.

Yes, fully agreed. China is producing haute capitalists and it's a problem they need to deal with.

The US should not be a country to compare to.

Both China and the US are global superpowers so a comparison is a necessary tool.

Out of two bad things, I will choose the less bad one.

they seem to prefer executing them

If you actually look at the last decade or so, they don't actually execute most of them and it's pretty much a "life without parole but you shouldn't be naughty in prison". I am also against capital punishment in all forms, and most prisons, I believe that even the worst billionaires can be reformed if you give them the chance. So this is indeed a valid criticism of China and I hope they can improve on that front.

largely political opponents they’re trying to keep quiet for good, not just criminals.

Yes, capitalists are the natural political enemy of the working class. You do not earn a billion dollars, you rob others of a billion dollars, and it's only natural that people who did that will not have the best political intentions in mind. They all need to be kept at bay (actually just stripped of wealth and sent to do community service for a long time or smth).

Subsidizing goods to be sold overseas is called dumping

China is subsidizing its economy primarily to develop productive forces which is seen as a necessary step towards communism. This means also that it will be more competitive at the international stage; this is primarily just socialism winning in the "free market of ideas".

there’s a reason the EU throws tariffs on tons of categories of goods from China

Or, hear me out, they could also subsidize their industries where it matters. But they can't really because most of that subsidy will be promptly absorbed by the capitalist in charge, and that is primarily the point.

Like, think about this on a global scale. If every state stopped subsidizing all industries, we would only be left with what's most profitable or the most popular with the working class, depending on the dominant mode of production. If everyone subsidized the industries necessary for human development, we would get human development. How is that not a win?