In order to not accidentally delete something, IMO.

Cmd+Z

Only if you notice that you've deleted something.

Okay so, seeing as this is me running this command on my computer...I'd notice I deleted something accidentally.

…Or, your cat did? Or small children, or something bumping a key unbeknownst yo you…

But I agree that configurable is generally better.

The macOS behavior has been the way it is for I believe 30 years, perhaps longer. Im not sure where your expectation of changing this comes from.

Who said I expected macOS to change?

I am not changing, so that's why I install an additional app.