>>>The yatzer hora for apikorsus, however, is very strong, and we are told by many tzadikim that it will be an almost insurmountable challenge באחרית הימים.
From the many people I know (of) who went OTD in the past twenty years not a single one of them became a Zionist. If anything some of them became virulently anti-Zionist. As in the league of Hamas and the Neturey Karta.
Another major issue I have with the anti-Zionists is that as the Chazon Ish said (in a different context about them) they are fighting the wrong battle. There are people from my former world who I STILL tremendously respect and consider to be Talmidey Chachomim and Yorey Shmoyim. Even so I also think they would accomplish a lot more and have a lot more positive influence if they were not so obsessed with Zionism, people who are dead for decades and things that happened more than half a century ago and started living in the present reality instead.