Aren't you making their point though?
The ADL and other Jewish organizations have pointed out that aside from articles about Israel that articles about or mention Jewish topics generally have been editing with disinformation or that made Jews out to be the aggressors.
I agree with you that in order to believe in the ideals of liberal democracy that we must have a core belief in truth. And it's absolutely true that the Trump administration has taken a position that is deeply chilling on the issue of speech. It's clear they want to be the sole arbiters of what "truth" is and they want to use their power to manipulate the reality.
All that said, I cannot as a Jew ignore the fact that Wikipedia is not in itself neutral, and that "more eyes" does not negate systemic bias. What I've seen as a Jew is what the true meaning of marginalized minority is, which is to say that if you are truly a minority and truly marginalized then in a vote of "truth", your reality will be dismissed if it conflicts with the vast majority, and that Jews are only 0.2% of the world population.
While I brought it up, I am not debating the issue of antisemitic bias in Wikipedia[1] as anything other than an illustration of your point of objective truth being true, but also that we can't simply rely on the wisdom of the crowd to materialize that truth.
To preemptively address the issue that's bound to come up when I post this- I'm not arguing that the evils of silencing the entire Wikipedia project are equal to or a fair response to Wikipedia's antisemitic bias. I do believe Wikipedia needs to address its bias problem and that's best done through internal reform.
Two wrongs don't make a right, nor are two wrongs always of equal weight.
[1] Firstly because my point is separate, and secondly because I've encountered the exact issues I've found in Wikipedia elsewhere, which is why I'm sure I'll be voted down.