I accidentally untarred archive intended to be extracted in root directory, which among others included some files for /etc directory.
I went on to rm -rv ~/etc, but I quickly typed rm -rv /etc instead, and hit enter, while using a root account.
Thankfully I don’t hit the space bar randomly (yet) but btrfs snapshotting has saved the day for other mishaps
I think the bigger point is that if you type the entire path, you are obviously typing more characters, which gives more opportunities for typos, whatever they may be.
It’s far safer to find ways to type less. Less typing, fewer typos. As long as you can do it safely.
I don’t think that applies when you intend to type something but accidental type enter after your first slash / :)