I don’t think so. To summarize, a bunch of students signed a letter on their own behalf or on behalf of the student organizations they lead. Their names were collected and published on a website. I don’t see any problem in that. If you sign a letter, you should own it.
The website further denounces the letter as well as organizations like al-Jazeera as anti-semitic. That’s fine too. Public debate naturally involves people in the debate accusing each other of all sorts of things: anti-semitic, fascist, racist, sexist, whatever. If you don’t like that kind of negative feedback, don’t make public statements - such as signing letters.
The website further drags individuals who had nothing to do with the letter into the debate. That’s inappropriate.