Here's the article for Kareem Abdul Jabbar, just for one example, which is how name changes should be handled-
https://en.wikipedia.org/wiki/Kareem_Abdul-JabbarHis birth name is noted in parenthesis on the very first line and during the biographical sections he is referred to as "Alcindor" up until the name change. His present name is used in the later sections of the article that talk about him in the abstract.
There's a whole range of material on wikipedia that I'm sure would offend many people for various reasons, that shouldn't be a reason to keep information out of an encyclopedia. Insisting that one thing is someone's "real" name that should be used at all times is not NPOV, whatever name was in common usage during a period of someone's life should be used. For an extreme Kanye West legally changed his name to Ye but the article is still called "Kanye West" because no one calls him that.
Not to mention their policy goes to absurd lengths, you're not allowed to include quotes or even link to a source that refers to a transperson by a "deadname". They're being governed by emotions and not actual standards these days. Like, everyone knows I hate Trump but the articles to anything relating to him (at least during the time he was president) were awful and not in the least encyclopedic. It read like someone ranting about him with straight up opinions being stated in a neutral voice.
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