So, we can probably short circuit this. Maybe, for you, death isn't a punishment. That's cool. But, you obviously cannot speak for everyone. So, how about we don't invalidate the experiences of others who have ether felt that it was, or who have been treated as if it was, by just flat claiming it isn't?
Whether it is, or isn't, is a local phenomenon, not a global one.
This at least feels like a bit of a strawman. I certainly didn't say that every DM who leaves the possibility of unexpected death on the table is a bad DM. While I haven't read every post in the thread, did anyone actually use the phrase "bad DM" except you?