(I'm writing out of an in general standpoint not just that particular case). From my perspective having such a referendums is very great. Even if in the end the referendum only resulted in stamping a paper you've given the people a say. And if in the end of just rubber stamped a paper, well you've more legitimacy for it now.

I'd rather Sweden move to a system closer to Switzerland politically. But we all know the establishment wouldn't allow it. A politician approved something controversial in Sweden? It will be forgotten in a couple months, same scenario in Switzerland? If it's controversial enough you can call a referendum and revoke it. Even if that might be possible in Sweden, there's no precedent meaning the country would have to almost burn down it feels like over an issue. In fact there's precedent against it. Sweden voted in a referendum on whether to swap to right side driving, the result: keep driving on the left. Later on we swapped anyways.