A while back I was tinkering with some website and installed some npm packages.
Then I tried to delete the nodes modules folder.... NOTHING worked... Safe mode, permissions change, command line deletion,... I spend like an hour googling and raging, it's my fucking computer I put the fucking file there, let me delete it!!!
I was ready to give up and finally stumbled on the answer on stack overflow. The npm folder that was created (I forget exactly what it was) had the ~ symbol in path name and that basically made the folder invincible.
Luckily the poster also posted the command line to nuke the fucker and I was finally able to delete it.
So yea, I kinda get it. Seeing that stupid you don't have permission to delete this file pop-up is rage inducing.