That is my point exactly... turning it completely off beats the purpose.
This solution would have to be completely new "design" - probably similar to aqara switch (with more options) AND a small "hidden" or hard to reach/press emergency switch which would completely switch off the lamp.
You see, the problem with smart switches is that we all have "normal" switches, and they're redundant. But I'd also hate to completely remove classic switch, because I might need to turn off the lamp completely or reset. without physical switch, one would have to use circuit breaker, and that would turn all the lights in the flat/home.
So the only solution IMHO would be aa special switch which would have a small real on-off button somewhere hard to press by accident (on the side of the switch?) and normal zigbee switch...
Something like this (sorry for bad mockup, I am not very talented in graphics software)