I am sorry but this is just not true. Your can get away with an income of around 110k chf without getting taxed by IRS. That might be "too little" income for you EF millionaires but it's a reality for many young Americans living in Switzerland and it's a reality that does afford enough savings to be able to invest.
That’s one opinion, and leaves out a whole lot of relevant details. Depending on things like student loans, family and other obligations, 110k can grow awfully tight awfully quick.
If you don't have any savings, then you don't have to worry about where to invest... There was no absolutism in my post. I said "for many", not all. Also, the bar raises when you have dependents and other deductible expenses.
My response was against the often parroted premise in this forum that it is *never* useful to invest in your pension pillars as an American which is not true in all cases. (It's besides the point that investing in ETFs via something like IB might be a sounder investment).