Gradine
The Elephant in the Room (she/her)
While certainly there can be horrendously biased works hiding behind a pseudo-objective tone, I find (and psychologists agree) that we tend to move towards what we pretend to be. Pretend to be angry and you'll make yourself angry; pretend to be calm and you make yourself calm. Wear your bias on your sleeve and you'll make yourself more biased; aspire to objectivity and, even though you'll never be perfect, you will get better at it.
My biggest problem is that what most people consider "objectivity" is not actually "objective" in the sense people mean it to be at all. "Objectivity" is very specifically a bias of its own, just that in most cases it tends to be a bias towards the status quo. If those claiming "objectivity" would be more open and honest about that fact (not that I think they're being deliberately dishonest, but far more likely to be believing their own lie) I would have significantly less problem with it.
Old English did have a neuter singular pronoun. The same neuter singular pronoun that would evolve into modern English "it", and with the same non-person connotation.
Not sure who compiled that table on Wikipedia, but it's incomplete. That's the paradigm for masculine plurals you see. Wikipedia's other table shows the feminine plurals. Because of the "generic he" rule, masculine plurals were used for mixed and neuter groups, so that could be one reason for the omission of the feminine forms.
It is interesting that you should mention genderless plurals mirroring the feminine singular paradigm, though, because that's exactly what happens in German.
Thanks for the link; I was pulling my hair out because I had a feeling you knew what you were talking about but I couldn't find anything that agreed with it. The stuff I was able to find did mention multiple times that Old English pronouns was influenced some by German.