Maybe there are different definitions, but the LEGAL definition of bias is what is relevant here.
Your 'general public' definition is irrelevant. A judge can rule against one side 80% of the time and still be unbiased IF THEY ARE FOLLOWING THE LETTER OF THE LAW.
The general public does not always understand that and might see that as showing bias---but in reality it is not.
This defense team filed very flawed, irregular motions, like the Franks, and then refiled three more times, the same flawed motion. OBVIOUSLY it will be ruled against each time because it had the same legal issues each time.
THAT^^^ is not judicial bias, that is just adhering to legal requirements and being consistent. And SCOIN ruled as such.