It's actually more complicated than that. At the time (2016), most of the people who used the brackets for their own names were pro-establishment political type

It's actually more complicated than that. At the time (2016), most of the people who used the brackets for their own names were pro-establishment political types who wanted to make a public stand against the neo-Nazis. This included many people who were not Jews, in fact my own perception in 2016 was that most of the people who chose to use the brackets at the time were not in fact Jewish. As part of the daily conversation, WikiLeaks understood this! This totally changes the intent of the WikiLeaks tweet. My impression of the tweet has always been that they were skewering the mainstream political commentator class, who they perceive as being both virtue signaling (hence the brackets) and fashionably "intellectual" (hence the glasses). Was it a stupid tweet, prone to misunderstanding? Absolutely. But one vague tweet does not justify labeling a person or organization as anti-Semitic.