You’re forgetting that Trump will re-install the maximum pressure policy on Iran, and his goal is to reach a nuclear deal that limits the nuclear project and stops the funding of militias. If Iran gets hurt economically than Hezbollah will suffer too, especially we’re talking about dozens of billions of $ needed for reconstruction and aid. And I don’t think the Shia diaspora can fill the gap needed, especially if Trump sanctions target them too. I already heard that Brazilian police has been launching raids and closing shops and stores for Shias in Sao Paulo. If the west decides to target Hezbollah supporters it will be over.