There is no such thing as neutral data, any form of measurement will induce some level of bias. While it can be disclosed and compensated for with appropriate error margins it can't ever be truly eliminated.

But to your point, intentional or undisclosed biases are a real that.

This isn't possible. You have to control both how it responds and what data is fed to it to produce something of use to anyone and doing so in order to produce something which mostly produces true and useful data is to 1/2 the population terrible biased. Remember its not a thinking being that can think objectively about all you've given it and produce useful truth. It's a imitative little monkey that regurgitates what you fed it.