You are contradicting yourself.

I already admitted my previous statement being bad.

You are looking for a walled garden that protects its users.

No, I don't. There's a difference between a walled garden and a safe environment, the word itself even says it. Windows, iOS etc. outright build closed boxes you can't escape. The Linux community rightfully doesn't like that, but to a degree where we hardly even have proper safety rails next to cliffs and either no or insufficient warning labels next to exposed 11kV powerlines. Yet we expect people who don't know what they see to not hurt themselves and instead stand still and study books for a few weeks. Even worse, in an attempt to keep answers as universal as possible the correct answers often are that "it's easy, just hook up X to the 11kV powerline" (equal to editing grub.conf, xorg.conf, or anything else that could literally kill your system or user-essential parts like the graphical interface).

I'm so fed up with the notion that any change that adds safety rails is seen as building walls. Just because you have to add "--no-preserve-root" to delete your root folder you're not prevented from destroying your OS if you want to (people seriously argued against this change). Improving the apt warning so humans pick it up is not a wall either.