If you and others were spouting this nonsense a few weeks ago, I'd have disagreed respectfully with you. But the letter that's prompted this is an assertion of established regulations, in place for a notifiable disease, and where there are legitimate concerns that relaxing restrictions may cause Covid spread to increase dangerously. I think those concerns are overstated, but as the experience of Chile is very different from that of Israel, it's reasonable to be concerned.
That letter, if you read it, is not about having a vaccine passport but complying with requirements to allow contact tracing if there is a spread of Covid. Those are practices at a level recommended (but not taken up) a long time ago, with the result that many including posters on here dismissed the requirements as unenforceable.
I've written before, and do so again here - those "I know" are not necessarily a representative sample. The businesses I use have a mixture of approaches to contact tracing, varying from rigorous to decidedly lax. Meanwhile, I suggest you get used to the idea that science, especially life science, is messy and understanding evolves over time - sometimes really quite rapidly.