I don't accuse you of hating God (or Darth Vader)
What I say is that IF you hate the idea of God being true, it would be just as likely to cause the same type of cognitive bias which theists are accused of in wishing the opposite.
If the atheist can impartially assess the quality of the evidence for God, why can't the theist?
I think that's a rational question. I know from past experience that it is common for some theists to portray all atheists as people who are afraid that god might actually exist and living lives of denial and self-deception. I don't believe this is an accurate portrayal of the preponderance of atheists but I wouldn't be surprised to discover that there are some who fit this description.
But there are many, and I count myself among them, who are only seekers of truth and understanding. I'm not afraid a god might exist, but I am justifiably skeptical of every theistic claim I have ever encountered. I wasn't always that way. My dear old mom raised me to be a christian, and in fact was so pervasive in that task that for 16 years I actually made my living as a preacher. I zealously defended what I believed to be the truth, using many of the same apologetic arguments that I now understand are logical fallacies. I'm who I am today because evidence and reason overwhelmed my (indoctrinated) predispositions, not because I wanted to be an atheist.
But this isn't about me, it's about how (in general) to work around the very real problem of confirmation bias you allude to in the quote above.
The answer to that is ... SCIENCE. This is
exactly the reason science was created. Because even among scientists there are those who wish to believe they are right about something so much that they fall into the same pitfall of confirmation bias. This is exactly why the scientific method includes checks and balances such as peer review, suggested methodologies when it comes to experimentation to test hypotheses, etc. The scientific method exists primarily to provide the means to increase our knowledge without perpetuating fallacy. Yes it misfires at times but it
inevitably self-corrects. Because no matter how sacred or respected a scientist is there are always going to be young, hungry scientists eager to prove him wrong if they can. A theory has to be quite robust to withstand that constant onslaught.
Religion, on the other hand, is all about unquestioned answers. It is about "truth" that is accepted not because it can withstand critical review, but only because some respected authority said that his god told him to say it. The nanosecond evidence favors god, god will become part of the scientific knowledge base. Why is god not part of the scientific knowledge base? Because there
is no evidence that there is a god. There is only the belief of those indoctrinated to believe in some god or other. Because every experiment that has ever been conducted to discover any effect that can be traced back to a god has demonstrated that if a god exists it behaves in exactly the same way it would behave if it did not exist. It is a claim based on nothing but anecdotes and
always fails to deliver results with any predictability.
This is why religion often finds itself at odds with science.