The legal language is important here. In this context "DeepSeek" is referring back to the corporate entity "Hangzhou DeepSeek Artificial Intelligence Co., Ltd (DeepSeek)" and from a legal document interpretation perspective this is not disputable at all. So an "implementation" of DeepSeek must mean a third party product that uses a DeepSeek product.

If you read the justifications for the order, there are zero mentions of open weights data or associated risks, and everything focuses on the use of DeepSeek commercial products with regards to their being hosted in China. The only mention that maybe could apply is "The models themselves may contain malware or other security vulnerabilities." but this is followed with another reference to a DeepSeek commercial product: "Indeed, open-source security research has found that the DeepSeek iOS mobile application contains multiple critical vulnerabilities."

The findings that form the basis of the order make no claims or references to open weights data at all, and plainly focus entirely on DeepSeek commercial products, so any attempt to apply the order to open weights data used by non-DeepSeek affiliated inference providers has not basis at all.