> I mean first of all, free and preserving facts would be fulfilled so the only part that could be compromised as you said is neutrality.
Yes, which was a requirement the OP specified alongside the others. Abdicating neutrality was not acceptable.
> But their grants affect future events not the ones recorded and wikimedia aren't even the people writting the text on wikipedia, they are unpaid moderators.
Wikipedia only posts information with citations. The grant is funding organizations that will provide citations from a certain viewpoint ("shifting away from Eurocentricity, White-male-imperialist-patriarchal supremacy, superiority, power and privilege"), thus affecting the information that will show up on Wikipedia in the future. This follows trivially so I'm not sure exactly what doesn't follow.
> how so? The non voting shareholders of exxon and the donators in wikimedia have the same role, financing the operation.
The returns shareholders are expecting is money. The returns Wikipedia donors are expecting are improvements to Wikipedia in its role as neutral historian. Money and those expectations are not commensurate, so the comparison isn't really valid on its face.
Furthermore, if you accept that Wikimedia funded activism that's not strictly in line with being a neutral historian, then you must conclude that they abdicated that role contrary to donor expectations.
If you wanted a proper comparison to Exxon, then it would be comparable to Exxon making a series of choices that reduce shareholder value, which gives shareholders grounds to sue. There is no such recourse for Wikimedia donors as far as I understand so they still aren't directly comparable, but the "betrayal" of violated expectations as you termed it, is of a similar kind.