You alias rm to do nothing. There is no danger of aliasing rm to echo. The only thing that’ll happen is nothing.

Or are you seriously suggesting that if you do this, you somehow get used to rm doing nothing? Like you’ll just start rm’ing randomly because you know it’ll echo? I mean, stupider things have happened, but… yeah

There are solutions already. Just use them instead of rm

https://wiki.archlinux.org/title/Trash_management

Then can alias rm to echo Use trash instead! or something. You wanna build new habits, not co-opt rm, it could happen easily that you’re ssh’d into a system where your rm alias doesn’t exist or similar