As long as it excludes politics in general, without overt partisan bias demanded by the government, what's the problem with that? If they want to focus on other subjects, they get to do that. Other models will provide answers where Copilot doesn't.

Chinese models, conversely, are aligned with explicit, mandatory guardrails to exalt the CCP and socialism in general. Unless you count prohibitions against adult material, drugs, explosives and the like, that is simply not the case with US-based models. Whatever biases they exhibit (like the Grok example someone else posted) are there because that's what their private maintainers want.