You obviously weren't travelling with me or my wife the last few weeks! Neither of us wants to see another Terminal for several months! And who says you should be deleting System Locked files?!
I had an instance where an old folder with hundreds of clipart got locked and nothing...and I mean nothing would work to unlock and delete the items.
My (and your) friend the Terminal made short work of it.
There are also instances where trashed items on external drives get locked or the trash folder gets corrupted and the shell is the only way to deal with it.
Tiger might have resolved some trash issues from previous versions, but you never know. Pretty soon, Jim, you may not be able to boot into OS 9 and delete files in X.