A conspiracy? Hmmmm, you have an Israeli minister, Smotrich openly discussing the topic and how it could be achieved who has previously given speeches whilst displaying a 'Greater Israel' map.
It's open discussion in Israel, whether it's through religious belief or a potential answer for securing the Israeli state. It's not gained massive traction but it's not a conspiracy and as Israel lurches further into populism and nationalistic rhetoric is may prove attractive to more?
https://www.arte.tv/en/videos/115065...ists-in-power/
Decent watch if you can be arsed.