I don't think there is anything definite we can say about anything. Like philosopher Quine said: "no statemeant is immune to revision".
Which is not the same as saying we cannot make claims and give reasons for them. The problems arise when people start saying: "this is the only legitimate answer". Such as the atheistic answer to the problem of evil for example. Or any particular theistic response for that matter.
If people are making definite statements about God I object to that too.
Science is great at answering all sorts of questions, which beguiles some into thinking it should be able to answer all important questions. Dawkins as a "professor for public understanding of science" added much confusion in this regard.
I notice that the next scientist to hold this post has attempted to remedy the situation by explaining there are questions science cannot answer, including the existence or otherwise of God.
https://www.theguardian.com/science/2016/jun/29/what-we-cannot-know-marcus-du-sautoy-review