Last time I have been there food has costed literally double than in my home country which is also in the Alps, also has that standard of living, etc.
But hey, you moderately save on taxes if you finally manage to settle there, which csn be a bit of a challenge since switzerland isn't the most easy country to get permanent residence in.
As a European who has traveled to nearly all European countries and lived in 6 different ones, the idea to only look at the taxrate when chosing your future home country sounds so ridiculously simplistic and money-focused that it could only have come from an American author.
The point of having more money is to lead a happy live. In some countries you need more money to do that than in others. And depending on your character, hobbies and goals in life some countries will make it much more expensive than others.
For example if you like enjoying a beer in the sun and you start living in Island because of the tax rate, your first winter depression will make you question how smart that really was. Or you will just travel to southern Europe on a regular basis, but then why not live there in the first place.