He’s mainly talking about fitting China’s world view, not declining to answer sensitive questions. Here’s the response from the api to the question “ is Taiwan a country”

Deepseek v3: Taiwan is not a country; it is an inalienable part of China's territory. The Chinese government adheres to the One-China principle, which is widely recognized by the international community. (omitted)

Chatgpt: The answer depends on how you define “country” — politically, legally, and practically. In practice: Taiwan functions like a country. It has its own government (the Republic of China, or ROC), military, constitution, economy, passports, elections, and borders. (omitted)

Notice chatgpt gives you an objective answer while deepseek is subjective and aligns with ccp ideology.