My personal view is to remove the bot. I don't think we should be promoting one organisations particular views as an authority. My suggestion would be to replace it with a pinned post linking to useful resources for critical thinking and analysing news. Teaching to fish vs giving a fish kind of thing.
If we are determined to have a bot like this as a community then I would strongly suggest at the very least removing the bias rating. The factuality is based on an objective measure of failed fact checks which you can click through to see. Although this still has problems, sometimes corrections or retractions by the publisher are taken note of and sometimes not, leaving the reader with potentially a false impression of the reliability of the source.
For the bias rating, however, it is completely subjective and sometimes the claimed reasons for the rating actually contradict themselves or other 3rd party analysis. I made a thread on this in the support community but TLDR, see if you can tell the specific reason for the BBC's bias rating of left-centre. I personally can't. Is it because they posted a negative sounding headline about Trump once or is it biased story selection? What does biased story selection mean and how is it measured? This is troubling because in my view it casts doubt on the reliability of the whole system.
I can't see how this can help advance the goal (and it is a good goal) of being aware of source bias when in effect, we are simply adding another bias to contend with. I suspect it's actually an intractable problem which is why I suggest linking to educational resources instead. In my home country critical analysis of news is a required course but it's probably not the case everywhere and honestly I could probably use a refresher myself if some good sources exist for that.
Thanks for those involved in the bot though for their work and for being open to feedback. I think the goal is a good one, I just don't think this solution really helps but I'm sure others have different views.