I have not tried wikitree specifically, but briefly tried a comparable thing on Family Search. I quickly concluded that it was not for me. Among other things, a person who clearly is shown in records as a woman was listed as a man - and I could not change that, but the web site explanations/instructions encouraged me to create a duplicate person with the correct gender.
I agree with your observ ation that wikitree likely will be like Wikipedia - but to me, that is the bad part, not the good part. I see so many wrong things in Ancestry trees (including ones whose owners fail or refuse to correct the errors) that I would not want to invest my time and energy in a project where anyone who wanted to add nonsense could do so. Just my own view.