He should if he was definitively confirmed to be the person; however, the accusation that it was him comes from questionable sites (4chan, Rebel, and Daily Stormer) and, contrary to what is being reported on sites like those, he hasn't been arrested or formally accused by law enforcement. Also, the reports that they somehow identified him through photo recognition is very sketchy and come from one person's tweet. 4chan -- possibly the last name you think of in credibility -- stated about the Amazon hack; however, from what I've read the information doesn't definitively identify him. Even the reports that the victim was filing a complaint against him was never officially reported.
Like I said; if he did it, he needs to be charged for it. I'm not a fan of the antifa's tactics. I believe that they're counterproductive. I also believe they're just anarchists taking advantage of the situation to create havoc.
However, if he's not the person, then these sites need to stop jumping to conclusion because it fits their ideologies.