Obviously I am sympathetic to BDS and Yang calling them fascists is disappointing.
That said, In his defense I don't think its something he's passionate about and often politicians like him have one or a few issues they really feel like they can make a difference on and on the rest they fall in line. In his case I don't think he wants to burn bridges with Zionist Democrats in case some of those Zionist Democrats, who are more likely to be among the older party establishment, can help him achieve the policy objectives he's passionate about. As a young up and coming politicians you don't want to start battles with the establishment on all fronts, long term that's a losing strategy.