The Asian varieties are generally blight resistant and grow in the US, but they aren't as good for nuts or lumber. The European varieties are slightly less susceptible to blight, but are definitely susceptible. There are European/Asian crosses that are more resistant, but they don't seem to be widely grown here. Maybe they aren't as cold tolerant as the native American varieties, and thus more restricted for where they can be grown?

The parallel question is why Europe doesn't seem to be having as many problems with blight if their trees are susceptible. I think it's partly that the disease just isn't as prevalent yet, and partly that there are some "odd" biological controls being used there that for some reason don't work as well in the US: https://portal.ct.gov/CAES/Fact-Sheets/Plant-Pathology/Prote...

More at https://tacf.org/

No chinese products around, not sure if you actually have any real experience of stuff you comment on.

Native in Europe and Asia.

There also is a different kind of chestnut commonly found in parks, along roads, that is not edible: https://en.wikipedia.org/wiki/Aesculus_hippocastanum

Sometimes called horse chestnut, but not actually a chestnut, completely unrelated. North American native, though I understand it's been introduced into Europe.

The varieties grown and sold in Europe are larger than the Asian.

I have an American/Chinese F1 hybrid here on my hobby farm and its nuts are smaller than the Chinese. Which aren't very large.