How did you get that from the article? The agreements in place already allow immigration from eu countries, not a lot would have changed in this regard. The main problem is the further erosion of swiss direct democratic rights and sovereignty.

Actually it is implemented as we speak, after years of tough negotiations, because that's the beauty of Swiss initiatives, they give the tone but not the legal terms - ensuring there's negotiation room, both internal and external. So depending on your personal definition it is succeeding or failing, but the fact is it is happening, there's no doubt about it. It's also not a "Brexit" because Switzerland never was part of the EU so using that name makes the discussion highly confusing for an outsider.

Assuming the UK was using the Swiss model.