@blatham,
Wiki has been victim of its own success. As it emerged as THE website of reference, some people started to try and manipulate it to their benefit, e.g. to debase climate science, misreport the slaying of black people by cops, or just to put up a page about themselves and how cool they are... This led to a period of "editor wars" which is now if not over at least under control.
In short, the utopian idea of its founders that one could crowdsource knowledge proved a tad naive, in that not everybody wants to spread the truth. As we all know, there are constant attempts at disinformation or manipulation of information in this world. And I am not talking of people having a dissenting opinion here; I am talking of liars, con artists, professional manipulators, spin doctors, etc.
Yet in the end, there are enough people with good intentions to make wikipedia work. All it takes is 1) good documentation of the editing process, eg a backup of all past versions of any page and a record of who edited what; and 2) a recognition that some sources are more trustable than others, that some editors are better than others on some particular topics, and that quoting the sources of any info is absolutely essential to maintaining credibility and verifiability.
IMO Wikipedia is actualy better tooled to do what they do than any paper-based encyclopedia. E.g. their main competitor, the Britannica, may be more carefuly written and edited, but it does not provide its sources.