Calling somebody with his former name and mentioning his former name in a Wikipedia page are two completely different things. Using the fact that the former is seen as rude by some to avoid the second is in my opinion just an example of the level of extremism of the pro-trans activists.
But if in fact it made sense, shouldn't we completely remove any reference of the previous name also from the pages of people like Yusuf Islam [1] or Muhammad Ali [2] ?