Either his claims are factual, or they aren't.
If they are not factual, they should be refuted, but appealing to his "motivations" or "track record" is not a refutation. It is an ad hominem attack, i.e., a logical fallacy.
As I said above:
> So when an oil company writes a report on the viability of solar power then that doesn't affect how we should view the report?
> His motivation absolutely affects how he reports on this issue. He's not a neutral observer and so he picks and chooses which facts he includes and puts his own spin around the issues.
The truth of that claim has no causal relationship with his opinions. I mean, obviously someone who disagrees with funneling donations to left-wing causes would be more likely to complain about it, or even possibly make something up. But that in itself has no bearing on whether the claim is actually true.
Does Wikipedia funnel donations to left-wing causes or not?
You have presented no evidence one way or the other. Instead, you have attacked his "motivations" and "track record". That is a textbook ad hominem.
Did you actually read the article? This point is not made anywhere in the article.
No point in discussing this further.
"The Wikimedia Foundation Knowledge Equity Fund is a new US$4.5 million fund created by the Wikimedia Foundation in 2020, to provide grants to external organizations that support knowledge equity by addressing the racial inequities preventing access and participation in free knowledge."