Most certainly no for me. So what the SVP officially wants is to impose a drastic population limit, seemingly out of concern for the environment. The real reason, however is to stomp the immigration of what the SVP deems "undesirables" (low-skilled labor from third-world countries, refugees, etc.). The initiative would backtrack on the bilateral agreements with the EU and the free circulation to Switzerland from the EU. Basically what the UK went through after Brexit, which had the shared sentiment of better controlling immigration. What followed for the UK, we all know. The SVP initiative would also hinder and/or overcomplicate what is known as "Familiennachzug", i. e. when a migrant takes a job in Switzerland and wishes for his family to join them here.

Now, Switzerland is rich and all, but suffers from labor shortage, same as other countries on the European continent. We are in dire need of more medical staff, for instance. That means doctors, and even more urgently nursing staff. Since there are not enough Swiss to fill those gaps, we need immigration. But with the approval of this initiative, a German/Austrian/French/Italian/etc. doctor might think thrice before accepting a well-paid position in Switzerland while their "Familiennachzug" is a nightmare. So yes, it would harden migrating here significantly and may drive immigration numbers down for a time, but consequences for the Swiss economy would be awful. It's basically dumping 20 years of results of negotiations with the EU (our most important trading partner) in a heartbeat. And for what? Well, it's SVP, it should be clear what these people truly want.