She did not do that, your media did.
Newshub blurred her hand in one of their news reports claiming that she was making a white power gesture with her hand when in actual fact she was playing with the zip on her top.
There was also video footage of KJK discussing the events in Melbourne with some of the organizers, they all said they had no idea the men in black were Nazis until they starting saluting but your media did not report that either.
The also didn't report the disparaging remarks the NSN released before the event, they claimed KJK was "promoting lesbianism" and "imposing cultural Marxism".
Doesn't sound like they were there to support women speaking.
KJK was a lifelong Labour supporter and feminist until she decided that to make headway on this issue she needed to engage with people from across the political spectrum and use the platforms she was offered. The left wing media would not entertain a woman speaking about women's rights so she used right wing media, who were willing to platform her, to get her message out there.
She has been smeared as far right by some left wing feminsts who were pissed off that her strategy got the message out to ordinary women, they have chosen to remain loyal to the political left which continue to shit on them. It's disappointing that some of the women who call themselves feminists are more interested in the men who platform KJK than what KJK has to say.
I can't imagine KJK's personal politics have changed that much but she is publicly explicitly non partisan and welcomes women from across the political spectrum to speak at her events.
There is no association with Nazis, you can only believe that if you have never listened to KJK herself or you need a way of explaining the violence women were met with just for wanting to speak about their rights.