3a life insurance survivor here. The perspective is not right: a person new here, possibly having built up in their heads a utopian idea of Swiss fairness/transparency/efficiency/justice in their minds, is far FAR more likely to listen to a very friendly person “representing” one of the “top 3 insurance firms in Switzerland and the world” coming with fancy presentations and friendly advice (wolves in sheep’s clothing) than an unformatted (edit: just checked, it’s more formatted now than 3 years ago!) website called “the poor swiss” or another full of affiliate links and smilies called “the mustachian post”. After all, the internet is full of scammers (right?), and Switzerland is the land of safety and stability, and what in the world could be safer than a Swiss insurance company, right?
I know because I have been through this journey already, and even if I lost CHF 5500 to 3a life insurance, plus another 1000 in opportunity cost (as their ETFs are dogshit) what remained actually valuable is that this advisor explained the Swiss pension system, compound interest, DCA, time in the market, diversification to me very well. Expensive lesson, but valuable.
In hindsight one of my neighbours (also foreign, of course) told me within our first week here “Switzerland is not Switzerland, you’ll see”, I got it much later 
Spot on, and balanced.