No it is not, it is official state censorship, there is a law about it, and DeepSeek has no intention to "fix" it, because it would be breaking Chinese law.

On the other hand, giving the election results in the US is not illegal (obviously) and Google fixed it (at least for me), giving the the expected factual answer.

Edit: Not actually sure about there being a law relating to Tiananmen Square, subversive speech is illegal, but would DeepSeek break the law by talking about it? Not sure, but it probably could get them in legal trouble.

Easy way to tell will be to wait and see if it gets fixed now that there is attention on the topic.