> only Wikipedia's editors can edit them
Anyone can be a Wikipedia editor, assuming you haven't done something egregious and gotten a lifetime ban.
It takes no time at all to set up an editor account and you don't even have to divulge your real identity to do so. The Wikimedia Foundation appears to go to great lengths to defend their editors and has gone to court to defend their editors' rights to pseudo-anonymity.
Note: I am a former employee of Wikimedia and everything I saw while I worked there supports that the vast majority of staff, including management, care a great deal about protecting editors, promoting free knowledge, and making the project as open and inclusive as possible.