Editing one’s own Wiki page is tricky; and there will always be someone ready to step in and edit it again.
There are even rather militant ‘teams’ involved in editing various pages to suit a particular agenda:
No argument there. I view one's own Wikipedia bio page (if one has one) as a golden opportunity for everything from libel to identity theft. The price of a public bio is constant vigilance.
I'm nowhere near important or notorious enough to warrant a bio page.
OTOH, I've been a contributor to Wikipedia for 20 years. I was more active 2005-2010 than in the last 15 -- I authored a couple pages, edited a couple others. I have a user page if anyone cares to look it up. (That's not a regular Wiki page, it's in the subsection of Wikipedia users. I check it from time to time; nobody including me has touched it in a decade, in fact I should update it, LOL.)
Despite the ubiquitous liberal bias on Wikipedia, I have found it possible to argue with those who disliked something I put on a page; that's what the "Talk" pages are for. Sometimes I prevailed, other times not. Such is life in the fast lane. I suppose if one considered one's own bio page a hopeless battle, one could mark it for deletion. Wikipedia is not the only database game in town, although it's arguably one of the most widely known.