In my opinion *most* Swiss banks are overrated and just coast on the reputation they had in the past, reputation they no longer live up to.But most people here might have the funds to one day bank with traditional Swiss banks. So, the discussion is indeed pertinent. After all, you attacked the entire Swiss banking system, not just UBS and Credit Suisse.
They are not private at all. CRS killed Swiss secrecy and it's not coming back.
As a non-resident they are extremely expensive compared to what you are actually getting. Banks in Singapore provide about the same services and are much more solid, and much cheaper to transact in. Also much less of a compliance hassle once you open the account.
Wealth management is a scam, charging you extremely high fees for funds that you can find in the open market for a fraction of the price. Over years these fees accumulate and eat a lot of your gains. Few weeks ago a Swiss bank actually offered me their "amazing portfolio" that made 6% per annum that is also investing in "startups" = Private Equity (upon detailed checking it us actually just holding some publicly owned PE funds\stocks... thank you guys I can buy KKR myself, I don't need to pay 5% front-load fee for that). A diversified non-correlated ETF portfolio will beat 99.99% of Swiss funds, guaranteed.
Yes, Swiss banks are "solid" and won't go bankrupt, but if you don't keep cash but instead keep your money in solid bonds\ETFs it doesn't matter as these are automatically kept in a segregated account. You are equally safe keeping your money in your Interactive Brokers account, and if it goes bankrupt tomorrow you'll still have your stocks\bonds.
I guess they are useful if you want to use their trust services, for succession planning and asset protection. Still you'll be paying a lot for what you get and below 5m I doubt it's worth the yearly costs. Maybe it would be worth it when you've already made your money and just want to protect it in an extremely conservative way. So for some people, worth it. But personally I'd rather go the Martin Everson way spreading the wealth over multiple accounts\jurisdictions rather than having a lot in one Swiss account- single point of failure.