That might be because we defederated from worldnews (because they disliked the pro-palestinian stance we have here).
As for the flood of zionist posts, that's astroturfing, propaganda and censorship. Accounts are getting blocked and kicked on reddit for stating anything pro-palestine on subs like worldnews and many of these pro-isreal accounts were made recently. I believe someone else posted also how Israel literally has a site to get people to boost pro israel content.