There’s a real split in this debate, between people living in countries that have this and people living elsewhere. People who have used it are generally supportive, if they think about it at all. People who’ve never lived in a country with this are generally skeptical about the benefits and pessimistic about the downsides (privacy, mainly). HN being HN, is almost entirely in the latter camp regardless of where they live.
I would have expected the Swiss to be skeptical, and to some extent they were. This is the narrowest possible margin of victory. Still, it would be interesting to know what argument the Yes campaign used that resonated with > 50% of voters.