Easy - it means that they will fight the BDS and similar pro-Palestinian/anti-Israel idiots and programs. Europe often makes the artificial distinction.
It doesn’t follow at all. Granted, anti-Semitism is one thing, and anti-Zionism is another, and the two do not necessarily coincide in all cases. So then the question is, where does one categorize BDS? An anti-Semite will say categorically that it’s merely anti-Zionist. An anti-Zionist might or might not agree, depending on what his opinion is, and how honest he is. It’s a blur, and gives no clear indication where Austria stands on BDS or anything else.