Leaving them nameless doesn’t give them the “fame” they want. It’s a really good practice.
What he wanted - again according to the manifesto - is exactly what he's getting: further division and a clamping down on gun laws.
She also legally has to do it I believe, as Tarrant is still the "suspect" and has not been formally found guilty. She's opportunistically trying to turn this restriction into some epic "I un-name thee!" cringe fest.
What makes you think that?