Isn’t “10 cases/year” sufficient testimonial that it can and does happen? Not sure what you’re asking, the laws are the laws, going under the radar is probably possible for a smalltime investor in CH, but many aren’t comfortable with that. I opened the article, didn’t register to read in full but even the title “the long arm of American taxes” is ominous enough to suggest it to be a reality.
In the end, as mentioned above, it’s your decision if the costs to you (not you personally, anyone opting for US ETFs + broker) now outweigh the potential pain of others, down the line.
I suspect most reasonable people who invest have made some provisions that their funds can be readily accessed by the right people after their timely or untimely demise. I certainly have! I’ve also seen families torn apart over inheritance, needing to sell assets to pay taxes because of bad inheritance planning, prime real estate abandoned to rot because heirs can’t agree on who owns which flowerpot (edit here’s one from my neighbourhood in Athens, we know from grapevine gossip that the heirs fell out >20 years ago and the property has been rotting ever since; a property half the size, and in similar poor condition across the street was on the market for 3mn EUR) - that’s destruction of family wealth in my opinion.