Comment by YZF

Unlike Iran what the leader says isn't some ultimate mandate to the followers. Party leaders, and members, come and go and their platforms changes over time.

Smotrich, e.g., says and does lot of things. Some of them resonate with some members of his party, others don't.

As to the party's platform you can read it here: https://zionutdatit.org.il/en/party-platform/

I would push back on the idea of expansionism. I don't think that's a mainstream view in the party at all. The party does support annexing the West Bank and Gaza which to be honest is the only workable solution anyways regardless of where you're coming from and really the best outcome for Palestinians as well if they become full Israeli citizens.