No rational case for God = increasingly desperate attacks on atheists

[Cato]

I would challenge your statement that 'scientists' criticism of religion is largely a philosophical debate', I don't agree. I would suggest that intellectual criticism of religion is a largely philosophical debate, not all scientists are intellectual, it doesn't follow that a person good at scientific endeavour is a good philosopher.

It's wrong to claim that it is not a philosophical debate simply because you think some of the participants aren't good philosophers. Testing for the existence of god in and of itself can be a scientific endeavor; however, the dearth of available evidence quickly invokes philosophy even if it's just a discussion regarding justification of belief. If not specifically addressing truth claims, religious discussions boil down to ethical debates. How is this not philosophical?

Are you perhaps narrowly defining doing philosophy as something that only educated academic professional philosophers can engage in? Even they can make mistakes, like your man Gray and his constant equivocation of secularism and religion.