I just noticed that there are quite a few users on Reddit from r/WorldNews who are defending Israel unequivocally and when I checked some of the users they seemed to be engaging on topics only about Israel/Palestine and they seem to be extremely active, so I have checked the Internet and there are even some older BBC article and Reddit posts discussing exactly this issue: https://www.bbc.com/news/blogs-news-from-elsewhere-23695896
OK sure if you’ve decided to define leftism as “the system” then sure, obviously. Weird decision but I’m not one to judge.