Even though there is no proof that there is no god, (you can't prove a negative, this is a logical fallacy) there are a great many scientific theories that many have tried to prove and not been able to. So it is right that we dismiss them as being invalid. The same goes for any hypothesis about a deity.

The existence of a deity is therefore is not a fact but a fallacy.

Atheism remains simply the recognition that a deity can't be proven and that is a fact.

As to "Creationist scientists" it is possible that a scientist can be effective in a limited range of expertise and also become a "mad scientist" by attempting to prove what he/she believes to be true such as "cold fusion" or "spiritualism".

Science is not at the service of religion otherwise we would be living in primitive times
where people believed that darkness was evil and sunshine good.